How many bars of compression must have Yamaha 4hp?
@VintageOutboardMan
Жыл бұрын
Typically the 4 hp have slightly higher compression than the 5 hp models. Most of the times they have 160-165 psi (the 5 hp should have around 135-140 psi).
@ajlin9832
Жыл бұрын
Hi, how set up pulser coil low speed on yamaha 4ac?
@VintageOutboardMan
Жыл бұрын
What do you mean with setting up the pulser coil? If you mean the ignition system, you can't do any adjustments on that other than adjusting the spark plug gap
@ajlin9832
Жыл бұрын
@@VintageOutboardMan I mean the distance between the pulser coil and the magnet, the magnet has 2 or 3 small blocks on it that pass by the pulser coil, I'm wondering if they are allowed to touch the pulser coil or there must be a certain distance between
@VintageOutboardMan
Жыл бұрын
@@ajlin9832 Unfortunately, I do not know those specs of that particular motor. However, lots of motors use a 0.2 mm gap.
@ajlin9832
Жыл бұрын
@@VintageOutboardMan thank you!
@hungnguyen8065
8 ай бұрын
U have for sale
@larsrnnevig8600
2 жыл бұрын
Hi. Do you know how to upgrade a 4AC 1992 model to 5hp?
@VintageOutboardMan
2 жыл бұрын
You can't fully upgrade it to 5hp. The 5hp got a larger displacement (103cc vs 83cc) and it has a bigger carburetor. Maybe if you change the carburetor, you gain a a little power though.
@claudionorcorrea5183
2 жыл бұрын
@@VintageOutboardMan se
@tjitsewenselaar5874
11 ай бұрын
@@VintageOutboardManits got the same cc
@VintageOutboardMan
11 ай бұрын
@@tjitsewenselaar5874 Not according to the manual and official specs ;)
@tjitsewenselaar5874
11 ай бұрын
@@VintageOutboardMan thats weird i have a 4 and 5 hp end did a ful rebuild they had they same piston rings and piston
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