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Yes, you need the ign coil to run.

Low pressure is about 4 psi. Normal is about 40.

The green oil light must be on. If off, you are detecting low oil pressure.

You can DL your manual from https://www.tohatsu.com/marine/common/owners_manual/150f3b4385d5095836188da9886847d138f7a8e4.pdf That should help.

No clue. Usually, Yamaha made their own stuff.

You could check with CDI electronics if the CD tests bad.

Yours should be close.

You can make up your own; the Factory ones come on coils.

Not that I know of.

I think a guy from australia was casting them in urethane. Did you break yours?

That's all there is.

353650162M PUMP CASE (NO LONGER AVAILABLE)

Verify grounds and the cable to the RC control box.

Did you go through the lower carb?

You need a replacement pump.

No, the Tohatsu Factory service manuals are copyrighted, so no online access. SERVICE MANUAL : 1 & 2 CYLINDER 2-STROKES Description Covers all 1 & 2 cylinder 2-stroke models. Part #: 003-21035-1 List Price (MSRP): $50.00

Year is irrelevant; You did not mention model. Likely M50B2. You need to run DFI oil, not just TCW-3. Those motors do not inject oil into the fuel rail; I mists into the air stream after lubricating the bearings. What codes are stored in the ECU? Looks like some moisture in the air compressor.

Year is irrelevant; Model is everything. That model is covered in the combined 1 and 2 cylinder Tohatsu Factory service manual.

Yep. No carb kits anymore, but wp kits are available. Is there a problem with this old obsolete motor?

That model does not have decompression.