Annual Tuneup and Intermittent Stopping issue

[Auto Doc's]

A 90-120 gear oil would do the job. Much of it depends on the age of the seals. If it seeps, keep it topped off and monitor the level every few weeks.

 

[sgkent]

please update us. When I come across a situation like that I loosen the fuel tank cap and see it that changes anything.

 

[primrose]

A 90-120 gear oil would do the job. Much of it depends on the age of the seals. If it seeps, keep it topped off and monitor the level every few weeks.

Thank you . I'm not sure what the service technician used before for lubricating the chain case . I popped open the stopper thing and it the lubricant inside seemed like greese consistency .
Can i just add the 90-120 oil to it . or should i drain the old lubricant and fill it with the 90-120 oil . Thank you for responding

 

[slomo]

Thank you . I'm not sure what the service technician used before for lubricating the chain case . I popped open the stopper thing and it the lubricant inside seemed like greese consistency .
Can i just add the 90-120 oil to it . or should i drain the old lubricant and fill it with the 90-120 oil . Thank you for responding

You want 00 grade grease. Typical car bearing grease is NGLI #2. It is way thicker than 00. Use 00 in the rear diff and chain case. 00 has a consistency of pudding. Do not use any other type of gear lube or 80w-90.

 

[slomo]

A 90-120 gear oil would do the job. Much of it depends on the age of the seals. If it seeps, keep it topped off and monitor the level every few weeks.

You want 00 grade grease.

 

[slomo]

It runs fine for about 15–20 minutes, then starts to stutter and shuts off. When I check, the fuel filter is dry. After letting it sit for 10 mins, the filter fills up again and it starts right up — but only runs for another 15 minutes before doing the same thing.

1.Open the vent on top of the gas cap when mowing.
2. Possible fuel line deteriorated internally blocking fuel flow.
3. Possible fuel filter restriction. BTW, I've ran the low micron filters on gravity fed mowers for years. Starts on the first pull.
4.Trash in the fuel tank outlet nipple.
5.That is a gravity fed carb. Run a NEW piece of fuel line straight to the carb. Should drain the tank dry and mow all day. If it works then install a good filter and a shut off valve inline to the carb.

The fuel filter is mounted lower than the carb, and the fuel line is a bit long. Could this be a gravity flow issue?

No. Fuel level and tank are higher than carb inlet nipple.

Also, I pulled the spark plug — it looks dark and sooty (pic attached). Should I replace it?

Yes, with a good NGK plug for that engine. If she measures over 5k Ohms, she is counterfeit. Take a meter to your auto parts store and test prior to buying the plug. That plug you show is some Chinese no name junker. Replace it ASAP.

 

[slomo]

Can i just add the 90-120 oil to it .

You can but that is not what Snapper used.

or should i drain the old lubricant and fill it with the 90-120 oil

No.

 

[primrose]

@everyone . Thank you for your time and patience answering the newbie here.

I have an update on the things i changed in my mower
1) Replaced the fuel filter with the red one and the mower ran fine , no stopping at all .
2) replaced the air filter and pre filter
3) greased the front wheels, rear wheels and inside the rubber boot
4) replaced the spark plug with the NGK
5) added 00 grease for the chain case

I cannot thank you all for taking your time and helping me.

 

[slomo]

added 00 grease for the chain case

Perfect. What about the rear differential? Needs some 00 grease too. Jim Jackson on youtube has many videos on these machines.