Recommendations
Oil Recommendations

We recommend use of Kohler oils for best performance. Other high-quality detergent oils (including synthetic) of API (American Petroleum Institute) service class SJ or higher are acceptable. Select viscosity based on air temperature at time of operation as shown in table below.

Fuel Recommendations

WARNING

Explosive Fuel can cause fires and severe burns.

Do not fill fuel tank while engine is hot or running.

Gasoline is extremely flammable and its vapors can explode if ignited. Store gasoline only in approved containers, in well ventilated, unoccupied buildings, away from sparks or flames. Spilled fuel could ignite if it comes in contact with hot parts or sparks from ignition. Never use gasoline as a cleaning agent.

NOTE: E15, E20 and E85 are NOT approved and should NOT be used; effects of old, stale or contaminated fuel are not warrantable.

Fuel must meet these requirements:

  • Clean, fresh, unleaded gasoline.
  • Octane rating of 87 (R+M)/2 or higher.
  • Research Octane Number (RON) 90 octane minimum.
  • Gasoline up to 10% ethyl alcohol, 90% unleaded is acceptable.
  • Methyl Tertiary Butyl Ether (MTBE) and unleaded gasoline blend (max 15% MTBE by volume) are approved.
  • Do not add oil to gasoline.
  • Do not overfill fuel tank.
  • Do not use gasoline older than 30 days.
Storage

If engine will be out of service for 2 months or morefollow procedure below.

  1. Coolant (anti-freeze) mixture should be in good condition and tested to guard against freezing in cold temperatures. Recommended 50/50 mixture will normally provide protection down to temperatures of -34°F (-37°C). If storage temperatures will fall below this, cooling system should be drained completely. A note should then be attached to equipment and/or engine as a reminder to refi ll cooling system before starting.
  2. Add Kohler PRO Series fuel treatment or equivalent to fuel tank. Run engine 2-3 minutes to get stabilized fuel into fuel system (failures due to untreated fuel are not warrantable).
  3. Change oil while engine is still warm from operation. Remove spark plug(s) and pour about 1 oz. of engine oil into cylinder(s). Replace spark plug(s) and crank engine slowly to distribute oil.
  4. Disconnect negative (-) battery cable.
  5. Store engine in a clean, dry place.