Table of Contents
Advertisement
ENGINE / COOLING SYSTEM
15. Reinstall the camshafts and camshaft carriers and
tighten the bolts evenly to specification.
TORQUE
Camshaft Carrier Bolts:
7 ft-lbs (10 N·m)
VALVE LASH - TAPPET SELECTION MATRIX
A 440 tappet means the thickness of the tappet is 4.40 mm. Part Number: 5139458-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).
322
325
350
352
378
380
408
410
3.64
AVAILABLE TAPPETS
328
330
332
355
358
360
382
385
390
412
415
418
16. Measure and confirm that valve clearance is now
within specification for each valve.
17. If valve clearance is not within specification, repeat
this procedure.
18. If all valve clearance measurements are now within
specification, remove the camshaft carrier and
proceed to "Camshaft Installation / Timing".
IMPORTANT
335
338
362
365
392
395
420
422
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
340
342
345
368
370
372
398
400
402
425
428
© Copyright Polaris Inc.
348
375
405
Advertisement
Chapters
Table of Contents
Troubleshooting
