Engine

PIVOTPOINTS

Lubricate all pivot points with light oil at least once a

season.

BALL JOINTS

The ball joints and drag link ends are permanently lubricated.

HYDROSTATICFLUID LEVEL

The transmission has been filled at. the factory and should not require changing for the life of the transmission.

The transmission fluid level should be checked prior to initial use. The level should not be above the LOWER mark which is about 1/4" from the bottom of the expan- sion tank. See figure 17. Overfilling reduces the expan- sion area in the expansion tank and fluid will spill at operating temperatures.

If transmission fluid is needed, use only 1OW3Oengine oil rated SF or CD.

If frequent additions are required, locate the leak andcorr Inadequate supply of fluid may result in per-

manent internal damage.

If the natural color of the transmission fluid hascha black or milky, overheating and/or water con-

taminate is indicated. The fluid should be drained and replaced with new transmission fluid.

To drain the hydrostatic transmission, remove the hex plug on the bottom of the hydrostatic transmission.

HYDROSTATICTRANSMISSIONCOOLING

The hydrostatic transmission is cooled by the oil, fan and fins. If the hydrostatic transmission runs hot, check to see if the fan is in operating condition, the oil level is correct and the fins are clean.

NOTE: DO NOT use high pressure water spray or steam to clean the hydrostatic transmission.

FIGURE 17.

To check or add fluid to the transmission:

1.Unscrew the parking brake knob.

2.Unscrew the two screws holding the access cover located in front of the seat.

3.Check the fluid level in the expansion tank. See figure 17.

4.If it is necessary to add fluid, unscrew the cap on the expansion tank. The cap has left hand threads. See figure 18. Remove the rubber bladder. Add fluid using a funnel. Do not overfill.

5.Reassemble parts.

FIGURE 18.

MAINTENANCE

WARNING: Disconnect the spark plug wire and ground against the engine before per-

forming any adjustments, repairs or maintenance.

TROUBLESHOOTING

Refer to the chart on page 17 for trouble shooting engine problems.

Refer to the separate engine manual for engine maintenance instructions.

Service air cleaner every 10 hours under normal con- ditions. Clean every few hours under extremely dusty conditions. To service the air cleaner, refer to the separate engine manual packed with your unit.

The spark plug(s) should be cleaned and the gap reset once a season. Spark plug replacement is recommend- ed at the start of each mowing season; check engine manual for correct plug type and gap specifications.

Maintain engine oil as instructed in the separate engine manual packed with your unit. Read and follow instructions carefully.

Model 734G Only: Your engine is provided with a drain hose for your convenience in draining oil from the crankcase. A clamp secures the drain hose to the side of the engine. See figure 19. To drain the oil, remove the hose from the clamp, and remove the drain plug from the end of the hose. Be certain to replace the drain plug and to use the clamp to secure hose to the engine before operating.

131734G, 131704F, 131704G specifications

The Yard-Man 131704F, 131704G, and 131734G are standout models in the extensive lineup of lawn and garden equipment offered by Yard-Man, a brand known for its commitment to quality and innovation in outdoor power tools. These models cater primarily to homeowners and professional landscapers, providing robust solutions for maintaining lawns and gardens effectively.

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