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The400exExorcist
10-19-2001, 08:47 PM
how long should I break in my 440 piston for? I have about 2 hours on it as of now
trx400ex
10-19-2001, 08:58 PM
i think its the same as stock..........10 hours
10-19-2001, 09:04 PM
After 10 hours change the oil and oil filter. Then its time to have fun.
The400exExorcist
10-19-2001, 09:07 PM
how should I ride? Ive been literally putting for these 2 hours can you give me the break in procedure?
trx400ex
10-19-2001, 09:10 PM
vary the rpms , keep it under half throttle for a few more hours, the keep it under 3 quarters and move up
The400exExorcist
10-19-2001, 09:23 PM
ok thanks!;)
oynot400
10-21-2001, 08:39 PM
I was told when I did mine was to let it run for about 15 minutes at idle and let it cool all the way down. Then run it for another 15-30 minutes varying the rpms, but nothing over 1/2 throttle. Let it cool down again. Then ride it like trx400ex said working your way up to full throttle.
Good luck ;)