Intake Valve Lash - Tappet Selection Matrix; Exhaust Valve Lash - Tappet Selection Matrix - Polaris RANGER 500 2018 Service Manual

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.

INTAKE VALVE LASH - TAPPET SELECTION MATRIX

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).
440 450 460
442 452 462
445 455 465
448 458 468

EXHAUST VALVE LASH - TAPPET SELECTION MATRIX

Tappet Thickness Example: 322 equals thickness of 3.22 mm. Part Number: 5139458-XXX (X's represent 3 digits on
tappet)
322 325 328 330 332 335 338 340 342 345 348 350 352 355 358 360 362 365 368 370 372 375 378 380 382 385 388 390 392 395 398 400 402 405 408
0.000-0.024 302 305 308 310 312 315 318 320 322 325 328 330 332 335 338 340 342 345 348 350 352 355 358 360 362 365 368 370 372 375 378 380 382 385 388
0.025-0.049 305 308 310 312 315 318 320 322 325 328 330 332 335 338 340 342 345 348 350 352 355 358 360 362 365 368 370 372 375 378 380 382 385 388 390
0.050-0.074 308 310 312 315 318 320 322 325 328 330 332 335 338 340 342 345 348 350 352 355 358 360 362 365 368 370 372 375 378 380 382 385 388 390 392
0.075-0.099 310 312 315 318 320 322 325 328 330 332 335 338 340 342 345 348 350 352 355 358 360 362 365 368 370 372 375 378 380 382 385 388 390 392 395
9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual
© Copyright Polaris Industries Inc.
18. If all valve clearance measurements are now within
specification, remove the camshaft carrier and
proceed to "Camshaft Installation / Timing".
IMPORTANT
Available Tappets
470 480 490
472 482 492
475 485 495
478 488 498
MEASUREMENT
Exhaust Valve Clearance (cold):
0.010 ± 0.002" (0.25 ± 0.05 mm)
Existing Valve Lash Tappet Marking (3 digits on tappet)
Correct Valve Lash Tappet Marking (3 digits on tappet)
ENGINE / COOLING SYSTEM
500 510 520
502 512 522
505 515 525
508 518 528
3
530 540
532 542
535 545
538
3.83