See also:

Ignition timing check - models with contact breaker distributor (Every 6000 miles or 6 months)
Note: With modern ignition systems the only suitable way to time the ignition accurately is with a stroboscopic timing light. However, for initial setting up purposes (ie after major overhaul, or ...

Examination and renovation
1 Clean all components using paraffin and a stiff brush, except the crankshaft, which should be wiped clean and the oil passages cleaned out with a length of wire. 2 Never assume that a component ...

Oil filler cap cleaning - OHVand HCS engines (Every 6000 miles or 6 months)
1 Simply pull the oil filler cap from the rocker cover and, where applicable, disconnect the hose(s) from the cap. 2 Inspect the filler cap, and if necessary clean the cap using clean petrol to re ...