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  1. Zonker

    Yanmar 4LHA htp replacement

    I'm guessing frozen into the alum alternator housing. Get a big breaker bar on the nut. SOMETHING will break (probably the head of the bolt). Then drill out the bolt
  2. Zonker

    Yanmar 4LHA htp replacement

    Just noticed the 10.9 marking on the head. That's a higher strength bolt (similar to Grade 8 US bolt). Replace with same strength. From auto parts store if not your local Yanmar dealer.
  3. Zonker

    Yanmar 4LHA htp replacement

    If you file the nut flat, the hex size may decrease. So hammering on a inch socket might be the thing. Is it a 14 or 12mm head? 14mm = 0.551" use 1/2" socket? 12mm = 0.472" use 7/16" = 0.4375 I think that the thing between the tangs IS a bushing. The nut is missing on the back. If you have...
  4. Zonker

    Yanmar 4LHA htp replacement

    Since it's a mechanical engine, when the magic box fails: - remove the stop solenoid (or just pull on it with some vice grips and clamp it in the correct position) - carry some jumper cables and start the engine with power to the starter directly - if the lift pump is electric jumper it, if...
  5. Zonker

    Yanmar 4LHA htp replacement

    There are also HP/kW break points. As some low power level you can still get mechanical injection in EU regions on new engines. But I think it's pretty low (15-20 kW??) Sorry not my typical size engine.
  6. Zonker

    Yanmar 4LHA htp replacement

    Yeah it also depends on the emissions region you are in. EU / USA / etc etc all have different rules now on what diesels are allowed to be sold. For example Nanni 4.65 (59 HP, N/A) Fuel system - Mechanical Indirect injection But might be EU only sales. Website brochure doesn't say.


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