Table of Contents
ENGINE / COOLING SYSTEM
TORQUE
Camshaft Carrier Bolts:
7 ft-lb (10 Nm)
13. Measure and confirm that valve clearance is now
within specification for each valve.
VALVE LASH - TAPPET SELECTION
A 440 tappet means the thickness of the tappet is 4.40 mm. Part Number: 5138477-XXX (X's represent 3 digit tappet
size)
An Engine Valve Lash Adjustment calculator has been created and is located under Service and Warranty – News,
Forms and Links. Click or go to
https://www.polarisdealers.com/files/ServWarr/English/Engine%20Valve%20Adjustment%20Calculator.pdf
The proper valve tappet may also be obtained by completing these steps:
The Valve Lash Specification and Measured Valve lash must be calculated in millimeters (mm)
1. Subtract the actual valve lash on the engine from the valve lash specification (i.e. 0.29 mm – 0.20 mm) = 0.09 mm.
2. Divide the 3 digit tappet number by 100 (i.e. 450 / 100) = 4.5 mm.
3. Add the results of step 1 and step 2 (i.e. 0.09 mm + 4.5 mm) = 4.59 mm.
4. Multiply that answer by 100 to obtain the correct new tappet (i.e. 4.59 mm x 100 = 459).
5. Refer to the table below to find the closest available tappet size to the result from step 4 (i. e. 459 should be
rounded to 460 since there is a 460 tappet).
440
450
442
452
445
455
448
458
VALVE COVER INSTALLATION
q
1. Install spark plugs
3.92
Available Tappets
460
470
480
462
472
482
465
475
485
468
478
488
and torque to specification.
14. If valve clearance is not within specification, repeat
this procedure.
15. If all valve clearance measurements are now within
specification, remove the camshaft carriers and
proceed to Camshaft Installation / Timing, page
IMPORTANT
490
500
492
502
495
505
498
508
2. Prepare valve cover sealing surfaces by cleaning
thoroughly to remove all residue.
3. Inspect the valve cover seal
necessary.
4. Replace the isolators
5. Install the four valve cover shoulder bolts
isolators using a T40 driver.
6. Torque valve cover bolts in sequence to specification.
9928491 R04 - 2017-2018 RZR XP Turbo / XP4 Turbo Service Manual
510
520
530
512
522
532
515
525
535
518
528
538
TORQUE
Spark Plugs:
9 ft-lbs (12 Nm)
w
and replace if
e
around each T40 bolt.
© Copyright Polaris Industries Inc.
540
542
545
r
and
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