12
- FORM NO. 56043129 - SR 1900
MAINTENANCE
ENGINE AIR FILTER
The engine Air Filter
(24)
is located in the engine compartment. Check the air mechanical vacuum filter Service Indicator
(27)
before each use of
the machine. Do not service the air filter unless the indicator is shown (red).
CAUTION!
When servicing the engine air filter elements, use extreme caution to prevent dust and dirt from entering the engine.
The engine air filter contains a primary (outer) and a safety (inner) filter element. The primary element may be cleaned twice before being replaced.
Replace the safety element every third time that the primary element is serviced. Never try to clean the safety element. To clean the primary filter
element, remove the cover from the dust cup end of the canister and pull out the primary element. Clean the element with compressed air (maximum
pressure 100 PSI) or wash it with water (maximum pressure 40 PSI). Do not put the element back into the canister until it is completely dry.
Special Service Note:
Inspect the complete air intake system for proper routing (kinks & restrictions) and sound tight connections. The mechanic
should run their hand around the air intake hoses to check for any cracks and holes that will allow non-filtered air to enter the engine that will
severely shorten the engine’s useful life.
ENGINE MAINTENANCE (150 HOURS)
At 150 hour intervals it is recommended that the following service be performed: Change oil and filter, clean and inspect spark plugs, check all
engine belts condition and adjustment, check battery charge and level, check cooling system hoses and clamps and check general condition and
performance of engine.
Note:
Reference the separately supplied PSI GM Power Train Products Operation and Maintenance manual for more detailed service data. See
the “Other Manuals Available” section for a complete list of the engine manuals that are available.
SPECIAL LIQUID PROPANE FUEL SYSTEM MAINTENANCE ON THE GM 1.6L ENGINE
Every 150 hours inspect and drain any oil build up from the LP fuel system electronic pressure regulator (EPR). During the course of normal
operation oils or “heavy ends” may build inside the chambers of the propane regulator. These oils and heavy ends may be a result of poor fuel
quality, contamination of the fuel supply chain, or regional variation in the make up of the fuel. If the build up of the oil is significant this can affect
the function of the fuel control system. Note: Reference the Tier 2 PSI 1.6l PFI certified engine service manual form # PSI1P6LPFI-A, and follow
the procedure to drain the EPR regulator.
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