Valves - Honda FourTrax Foreman Rubicon TRX520FM6 2020 Owner's Manual

Valve Inspection
Refer to Safety Precautions on page 111.
Valve clearance should be:
intake: 0.006 ± 0.001 in (0.15 ± 0.02 mm)
exhaust: 0.009 ± 0.001 in (0.23 ± 0.02 mm)
Excessive clearance will cause noise. Insufficient clearance will cause
loss of power and possibly damage the valves.
For those who are mechanically proficient and have the proper tools,
instructions on adjusting valve clearances are given in the official
Honda Service Manual. Otherwise, the valves should be adjusted by
your dealer.

Valves

Servicing Your Honda
163