1. Preventive Maintenance

2. GOAL
Prevent premature engine wear

3. 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

4. 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

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

6. 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

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

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

9. CHECK THE EASIEST THINGS FIRST!!!!!

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

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

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

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

14. 5. Sufficient Cooling
Cool air is reaching engine