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CZ 527 CZ 527
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INSTRUCTION MANUAL
CZ 527
CZ 527 - INSTRUCTION MANUAL
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Before handling the firearm read this manual carefully and observe the following safety instructions.
Improper and careless handling of the firearm could result in unintentional discharge and could cause injury, death, or
damage to property. The same consequences can be caused by any unauthorized modifications or adjustments,
corrosion, or use of non-standard or damaged ammunition. In these cases the manufacturer shall not be responsible in
any manner whatsoever for the resultant consequences.
Before leaving the factory this firearm was tested, carefully inspected, and packed. CZ cannot accept responsibility for
product handling while in transit, or upon leaving the factory. Therefore, please examine this rifle carefully at the time of
purchase to ensure that it is unloaded and undamaged.
This instruction manual should always accompany the firearm and that even in the case of its loan or sale.
CONTENTS
SAFETY INSTRUCTIONS 16
THE CZ 527 RIFLE DESCRIPTION
AND TERMINOLOGY 17
OPERATING INSTRUCTIONS 18
Ammunition 18
Magazine Removal 19
Magazine Loading 19
Loading of the Rifle 19
Unloading of the Rifle 19
The Safety and its Operation 20
Set-trigger Operation 20
Trigger Adjustment 20
Sight Adjustment 20
Rifle Scope 20
MAINTENANCE INSTRUCTIONS 21
Stripping for Cleaning - Disassembly 21
Disassembly of the Bolt 21
Cleaning the Rifle 21
Cleaning the Barrel Bore
and the Cartridge Chamber 22
Cleaning of Other Rifle Parts 22
Preserving 22
TROUBLESHOOTING,
CAUSES AND REMEDIES 23
ILLUSTRATION AND LIST OF PARTS 24
TECHNICAL SPECIFICATIONS 26
LIST OF ILLUSTRATIONS 26
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SAFETY INSTRUCTIONS
Always follow the safety instructions for your safety and the safety of others.
1. Always handle your firearm as if it were loaded.
2. Never point your firearm at anything you do not intend to shoot.
3. Never take anyone's word that a gun is unloaded.
4. Always make sure that your firearm is not loaded before laying it down, or handing it to another person.
5. Always store your rifle unloaded with the striking mechanism released.
6. Never abuse your firearm by using it for any purpose other than shooting.
7. Never leave a loaded firearm unattended.
8. Prior to loading the firearm make sure that barrel bore, chamber, and action are clean and clear of obstructions. Clean
a dirtied firearm immediately so that it will function properly and safely.
9. Always use only clean, dry, original high quality commercially manufactured ammunition, which is appropriate to the
caliber of your rifle.
10. Never drink alcoholic beverages or take drugs before or during shooting.
11. Always wear safety glasses and ear protection during shooting whenever possible.
12. Always keep the safety on when the rifle is loaded with a cartridge in the chamber, until you are ready to fire. Keep
firearm pointed in a safe direction when disengaging the safety.
13. A rifle with an activated set-trigger should be handed with maximum care, as even jolts during handling operations
could cause an unintended discharge.
14. Always keep clear and keep others clear of the ejection port.
15. Never squeeze the trigger or put your finger in the trigger guard until you are aiming at a target and ready to shoot.
16. Always be absolutely sure of your target, and the area behind it, before you squeeze the trigger. A bullet could travel
through or past your target up to several hundred meters.
17. Never shoot at a hard surface such as rock, or a liquid surface such as water.
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18. Never fire your firearm near an animal unless it is trained to accept the noise.
19. Never indulge in "horseplay" while holding your firearm.
20. Failure to fire: always hold the firearm, keeping it pointed towards the target, or a safe open area and wait 30 seconds
when the firearm fails to fire. If a hangfire (slow ignition) has occurred, the round will fire within 30 seconds. If the
round does not fire, remove the magazine, eject the round and examine the primer; if the firing pin indent on the
primer is light, or off center, or non-existent, have the rifle examined by a competent gunsmith.
21. Always make sure your firearm is not loaded before cleaning, storing or travelling.
22. Always keep and store your firearm and ammunition in separate locked receptacles out of reach and sight of children
and untrained people.
23. Never alter any parts of your rifle as the safety and proper function of your rifle could be seriously compromised.
24. Always be aware that corrosion, use of damaged ammunition, dropping the rifle on hard surfaces or other "coarse
treatment" could cause a damage you may not see. If something like this happens, let the firearm to be examined and
tested by a competent gunsmith.
THE CZ 527 RIFLE DESCRIPTION AND TERMINOLOGY
The names of basic rifle parts used in this Instruction Manual are presented in Fig. 1. Nomenclatures of all CZ 527
parts are presented in the section Illustration and List of Parts.
The CZ 527 is a light repeating rifle with a Mauser-type bolt action. The trigger mechanism is of a single set design with
an adjustable set-trigger; a single stage trigger is supplied on special order. The trigger is adjustable for pull weight and
trigger travel. The safety secures the rifle against unintentional discharge and at the same time blocks the bolt in a closed
position. The top of the receiver has milled grooves to accommodate scope mounts. The stock surface is made in a semi-
matte polyurethane lacquered finish. The rifle is produced in several versions. Characteristic features of all versions are:
- the CZ 527 is well-balanced and consequently quick and easy to aim
- easy mounting of rifle scope
- controlling elements, which are simple in operation, and easy to reach (bolt handle, trigger, safety, bolt catch, magazine catch)
CZ 527 - INSTRUCTION MANUAL
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- completely adjustable trigger mechanism, alternatives with set-trigger or without set-trigger
- easy disassembly for cleaning and routine maintenance, which can be carried out without any tools
- a high degree of accuracy when firing and long service life
- high functional reliability in all environments, even with ammunitions made by various manufacturers, and with different
types of bullets
Lux Classic walnut stock provided with a cheekpiece. This model is designed for aiming with mechanical sights as we ll as
optical sights.
Excellent Luxury version with stock made from hand-picked walnut wood with a cheekpiece. The metal parts surface is lustre
polished, the bolt is jewelled. This model is produced with floating barrel.
FS Full stock with cheekpiece and shortened barrel and rubber buttplate.
American Walnut stock without cheekpiece and with reduced drop at heel. This model is designed for aiming with optical sights only.
This model is produced with floating barrel.
Prestige Luxury version adapted to the requirements of markets in the USA and Australia. This model stems from version
denominated American, additionally the stock is made from hand -picked walnut wood. The metal parts surface is
lustre polished, the bolt is jewelled.
Carbine Rifle made in shorter barrel version with a classic walnut stock without a cheekpiece. This model is designed for
aiming with mechanical sights as well as optical sights.
Varmint Full stock without cheekpiece, with reduced drop at heel and strengthened fore -end. The barrel is of heavier type,
floating, without mechanical sights, the stock is designed for aiming with optical sights only. Varmint (USA) is supplied
with laminated or plastic stock.
OPERATING INSTRUCTIONS
Ammunition
Use only factory-manufactured standard ammunition of appropriate caliber, which are in compliance with CIP
regulations (International Proof Commission for Firearms and Ammunition) or SAAMI (Sporting Arms and Ammunition
Manufacturers' Institute Inc. of the United States). The use of other cartridges could damage the firearm or cause
malfunctions or injury to the shooter.
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Magazine Removal
Using one finger press the magazine catch towards the magazine (Fig. 2), and with the remaining fingers grip the
magazine bottom, and remove the magazine from the rifle.
Magazine Loading
With the open end uppermost, grasp the magazine in one hand. Place a cartridge on the magazine follower with the
base just forward of the retaining lips. Press the cartridge down and back until its base touches the rear flat edge of the
magazine. Place the next cartridge on top of the previous cartridge and slide in as already described.
Loading of the Rifle
ALWAYS MAKE SURE THE RIFLE IS POINTED IN A SAFE DIRECTION WHEN LOADING!
Insert a loaded magazine into the rifle and check that it is securely caught by the magazine catch.
Grip the rifle with the left hand by its fore-end, place the buttplate against your body, and grip the bolt handle with the
other hand. Open the bolt by raising the bolt handle and pulling it to the rear to its stop. Then push the bolt vigorously to its
forward position again and by rotating the bolt handle in a downward direction close the bolt action. This procedure inserts
the cartridge into the cartridge chamber and cocks the striker mechanism. The rifle is now ready to fire. If you do not
intend to fire immediately, ensure the firearm safety as described further in the section Safety and its Operation.
Note:
Loading is also possible for single cartridges by directly inserting into the chamber without the use of a magazine.
Unloading of the Rifle
ALWAYS MAKE SURE THE RIFLE IS POINTED IN A SAFE DIRECTION!
- remove the magazine in the manner as already described - see operating instructions, Magazine Removal
- move the safety to its "SAFETY-OFF" position in order that the bolt can be opened
- open the bolt and check to ensure that the cartridge has been extracted from the chamber and ejected
- close the bolt
- depress the trigger (dry fire)
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The Safety and its Operation
Shift the safety forward (Fig. 3) until the red dot is covered. This move puts the trigger mechanism out of operation, and
at the same time blocks the bolt so that it is neither possible to fire the rifle or manipulate the bolt.
Set-trigger Operation
The set-trigger is activated by pushing it in the forward (Fig. 4). For the reason of safety, activate the set-trigger only
after the rifle is loaded and shortly before shooting. Do not carry your rifle with an activated set-trigger! If you have
activated the set-trigger and you do not follow through with firing, keep your firearm pointed in a safe direction while
carefully engaging the safety and then squeeze the trigger. Subsequently unload the rifle in the manner described above.
Trigger Adjustment
Independent of whether there is a mounted set-trigger or not, the trigger mechanism can be adjusted with respect to
the trigger pull weight, and the trigger travel, before and after discharge. The adjustment can be performed after taking the
barreled action out of the stock by means of the setting screws A (trigger pull), B (trigger travel before) and C (trigger
travel after discharge) - see Fig. 5.
If the CZ 527 rifle is fitted with a set-trigger, the adjustment of the set-trigger is carried out by the screw located in front
of the trigger (Fig. 6). For safety reasons do not adjust the set-trigger travel as too short, as the rifle with an activated set-
trigger is very sensitive to shock, and during handling the rifle could unintentionally discharge. The safety of the set-trigger
adjustment can be checked with the rifle unloaded by repeated opening and closing of the bolt combined with moving of
the safety to its "ON" and "OFF" positions. The spontaneous release of the trigger must not occur.
Note: There is a possibility of dismantling the set-trigger from the rifle, without any impairment to the functional properties
or adjustment of the conventional trigger.
Sight Adjustment
The elevation correction is carried out by exchange of the front sight, when previously pressing the front sight detent
(Fig. 7). The front sights are supplied in different sizes. Windage correction can be carried out by the drifting of the rear
sight in the dovetail and then secured in its position by an indentation.
Rifle Scope
Mounting of the riflescope and sighting-in of the rifle should be entrusted to a qualified gunsmith's workshop.
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MAINTENANCE INSTRUCTIONS
Stripping for Cleaning - Disassembly
1. Remove the magazine.
2. Shift the safety to its "SAFETY-OFF" position in order that the bolt can be manipulated.
3. Open the bolt, and after swinging out the bolt stop (Fig. 8), pull the bolt rearwards out of the receiver.
Disassembly of the Bolt
As described above, remove the bolt from the rifle. Grasp the bolt body with your left/right hand and with the other
screw off the bolt sleeve approx. by 90° to the left (Fig. 9). Doing this releases the firing pin spring, and makes it possible
to pull the handle out off the bolt body and subsequently also the firing pin with the bolt sleeve and firing pin spring. If you
want to dismantle the firing pin spring, press the firing pin spring retainer against the spring pressure approx. 2 mm, and
then rotate in any direction by 90° and remove from the firing pin together with spring (Fig. 10).
Please note carefully the correlated positioning of parts, especially of the bolt body and the bolt body sleeve. After each
disassembly and reassembly of the bolt, check for yourself if it is possible to engage the safety in the manner described in
this Instruction Manual.
CAUTION:
Do not strip your firearm any further. If you assume that your firearm requires adjustment or repair, entrust this work to
a competent gunsmith in a specialized workshop!
Cleaning the Rifle
Clean the rifle
- each time you use it
- if you get your rifle wet
- as soon as possible after shooting
- at least once a year in a temperate climate
- as often as once a month in a tropical climate, or other demanding environment
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Cleaning the Barrel Bore and the Cartridge Chamber
If the firearm has not been fired or if only a few cartridges have been fired, clean the barrel bore and cartridge chamber
by a clean patch attached to a cleaning rod. Repeat the cleaning, changing patches, until the last patch comes out clean.
When the barrel bore is very dirty, apply a gun cleaning solution using cleaning brush. Let the solvent act for about 10
minutes (this time may vary depending on the solvent agent being used). Then thoroughly scrub out the barrel bore.
Subsequently, dry the barrel bore and cartridge chamber with a clean patch and check that all powder residues or fouling
have been removed. If necessary, repeat this procedure.
The cleaning rod and the brush must be inserted into the barrel bore from the chamber, to prevent wear or damage to
the muzzle. Pass the brush all the way through the barrel bore before reversing the movement. If you try to change
directions with the brush in the barrel, the brush could stick.
Cleaning of Other Rifle Parts
Other parts of the rifle can be cleaned with a dry cloth, old toothbrush, copper bristle brush, or a wooden scraper.
Preserving oil or paraffin oil can be used for proper cleaning. Never use the agent designed for barrel bore cleaning!
These solutions could remain in the joints, and after some time could cause corrosion. Check that cloth particles or brush
bristles have not become lodged in any part of the rifle.
The maintenance of the stock can be carried out with a dry cloth or by some furniture-polishing product.
Preserving
When the barrel bore, cartridge chamber, and all accessible parts are clean and dry, wipe these parts with a cloth
soaked in gun oil or apply the oil in a spray. Remove all excess oil.
Before shooting always wipe the barrel bore dry. At very low temperatures remove the oil from all accessible parts or
apply a lubricant prepared especially for these conditions.
Use thick preserving agents for example, preserving grease only for long-term storage in demanding climate
environments, and before any use of the rifle, it must be thoroughly removed from all parts of the firearm.
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TROUBLESHOOTING, CAUSES AND REMEDIES
If your firearm is properly used and maintained, malfunctions will rarely occur. However, if such a situation does occur
please observe the following instructions.
CAUTION - if a malfunction occurs, the possibility of an unintentional discharge is substantially increased. For this
reason, when clearing malfunctions, observe the Safety Instructions already mentioned above. Keep the rifle pointed in
a safe direction, do not turn the rifle against your body or anyone else’s. Do not place your hands in front of the barrel!
Malfunction Possible Cause Remedy
A round has not
been fed into the
chamber.
Magazine is not fully inserted or is damaged.
The rifle or cartridges are fouled (dirty).
Insert magazine properly or change magazine.
Clean the rifle and cartridges and wipe them dry or
as the case may be slightly lubricate.
Misfire Defective cartridge.
Firing Pin hole fouled (dirty) or improper
lubrication agent used during low temperatures
conditions.
Follow the Safety Instructions according to point 20.
Disassemble and clean the firing pin or use low
temperature lubricant.
A shot sounds
“weak“. The primer has been activated but no powder
load was inside the cartridge case. Unload the rifle and check that the bullet is not
lodged in the barrel. Any subsequent shot could
cause damage to the barrel!
The spent case
has not been
ejected.
Cartridge chamber, extractor or ammunition
dirty or unsuitable lubricant in low temperature
environment
Clean and wipe the rifle dry or eventually lubricate
lightly with a suitable agent. Use clean and new
ammunition.
If you cannot clear away any malfunction in the manner described above, entrust the rifle to a competent gunsmith for
inspection and repair.
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ILLUSTRATION AND LIST OF PARTS
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1 Barrel
2 Rear Sight
3 Front Sight
4 Front Sight Base
5 Insert
6 Screw
7 Spring Washer
8 Front Sight Detent
9 Detent Spring
10 Pin, Front Sight Detent
11 Front Sight Cover
12 Receiver
13 Bolt
14 Bolt Handle
15 Extractor
16 Extractor Collar
17 Firing Pin
18 Firing Pin Spring
19 Firing Pin Spring Retainer
20 Bolt Handle Catch
21 Bolt Sleeve
22 Pin, Firing Pin
23 Safety
24 Safety Spring
25 Bolt Handle Catch Plate
26 Bolt Handle Catch Post
27 Bolt Stop
28 Bolt Stop Spring
29 Bolt Stop Pin
30 Pin
31 Ejector
32 Ejector Spring
33 Sear
34 Sear Stop
35 Sear Stop Spring
36 Sear Pin
37 Trigger Housing
38 Trigger
39 Trigger Lever
40 Trigger Pin
41 -
42 Adjusting Screw, Set -Trigger
43 Set-Trigger Lever
44 Set-Trigger Lever Spring
45 Pin
46 Retaining Ring (2x)
47 Adjusting Screw (B)
48 Spring, Trigger Pull
49 Adjusting Screw, Trigger Pull (A)
50 Locking Nut
51 Adjusting Screw, Trigger
Overtravel (C)
52 Locking Nut
53 Nylon Pin (2x)
54 Trigger Mechanism
55 Screw
56 Spring Washer
57 Stock
58 Butt Plate
59 Butt Plate Screw
60 Swivel Wood Screw
61 Sling Swivel
62 Swivel Screw
63 Swivel Washer
64 Sling Swivel Assy
65 Trigger guard
66 Magazine Catch
67 Magazine Catch Spring
68 Rear Spacer
69 Frame Screw, Front
70 Frame Screw, Rear
71 Magazine Shell
72 Follower
73 Magazine Spring
74 Magazine Base Lock
75 Magazine Floor Base
76 Fore End Band
77 Fore End Band Screw
78 Fore End Nut
79 Trigger Spring
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TECHNICAL SPECIFICATIONS
Model Lux,
Excellent
FS
American,
Prestige Carbine Varmint Varmint
(USA)
Calibers .22 Hornet, .222 Rem., .
223 Rem.,
.221 Rem.* 7,62x39,
.223 Rem.
.222 Rem.,
.223 Rem. .221 Rem.,
.223 Rem.
Overall length [mm] 1077 977 1025 950 1120 1062
Barrel length [mm] 600 520 556 470 650 610
Sight radius (Mechanical sights) [mm] 462 382 - 330 - -
Weight (Empty magazine) [kg] 2,8 2,7 2,8 2,7 3,3 3,2
Magazine capacity [cartridges] 5 5 5 5 5 5
Trigger pull, Adjustment range [N] 12 ÷ 22 12 ÷ 22 12 ÷ 22 12 ÷ 22 12 ÷ 22 12 ÷ 22
* American model only
LIST OF ILLUSTRATIONS
1. The names of basic parts
2. Magazine removal
3. Shifting the safety to its "SAFETY-ON“ position
4. Set-trigger activation
5. Trigger adjusting screws (A - trigger pull, B - trigger
slack, C - trigger overtravel)
6. Set trigger adjusting screw
7. Front sight removal procedure
8. The bolt stop in its swinged out position
9. The bolt disassembly
10. Disassembly of the firing pin spring
The Company, reserves the right to make any changes it thinks
necessary to improve its models or to meet any requirements of
manufacturing or commercial nature.
