Preventive Maintenance

GOAL Prevent premature engine wear

Keep Engines Clean To keep cool, engine needs to be cleaned Cooling Fins retain heat/seize if dirty Use compressed air or solvent to clean

Checking Oil Check each time fuel is added Use correct type of oil Dipstick Filler plug Use correct type of oil Loss of oil could be caused by external leaks, worn oil seals, valve guides piston rings

Change every 10 – 50 hours based on manufacturers standards. Oil becomes contaminated with dirt, soot, sludge, varnish, metal particles, water & gasoline

Changing Oil Steps Disconnect spark plug Remove drain plug Drain oil- (warm oil drains more quickly) Replace drain plug Check filter Pour in oil CHECK LEVEL Replace spark plug

Mixing Oil & Fuel Pour part of gasoline into clean container Add oil Shake Add remaining gasoline Shake Again

If mixture sits for an extended amount of time add a stabilizer. Keep tanks full as possible to prevent condensation

CHECK THE EASIEST THINGS FIRST!!!!!

1. Carburetion Clean fresh fuel is being delivered in the correct proportion

2. Ignition System Strong ignition spark is timed correctly Test Ignition

3. Compression Is engine getting 30-45 psi minimum for starting? Needs 90 psi for operation

4. Adequate Lubrication Correct amount of oil is reaching critical engine components

5. Sufficient Cooling Cool air is reaching engine