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HI from Europe,i have a 130v4 beto 1996 engine i bought it used,when i get the service manual i checked as it per instructions about the timings,from manual the BTDC is 22,ATDC 5 and for carb picking up only linkage with specified length off 53mm,after checking the marks i found that BTDC was at 25 degrees which is timing for 115v4,ATDC was 5 degrees as manual described and the length of carb pick up was at 57mm.I would like to set BTDC at 22 as manual instructions but i don't have either timing light or dial gauge,if i just mechanically adjust the linkage at 22 degrees i will have any problems?Also i understand that if i adjust the linkage for BTDC at full throttle then i have to adjust the screw of full retard to get again to 5 ATDC.The engine is idling well but is rough until 1500 rpms then from middle to full throtle is good!Thanks in advance for any help you could provide.
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Best to check timing with a light to see what it is actually doing
I have owned a timing light for many years,
and if you plan on working on automotive or marine motors, it is a very good tool to have.
here in the USA the auto part stores have rental tools, not sure where you are -
Hi thanks for your response i understand that is better to check timing with light but i do not have one and i am not planning to work in the marine industry to buy one,here in Greece we don't have rental tools,if i make the adjustment mechanically is any possibility to make a huge problem to my motor or should i leave it as it is?Thanks again for helping.Comment
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