Trim noise on Yamaha 130hp ?

[robprid]

I have a tecnical question re my 130hp Yamaha ? Every now and then when I trim the motor down I get a load shreeking sound (almost like chalk across a blackboard) . The motor is only 1.5 months old and performs perfectly . What do you think could be causing this ? I first thought it could be some dust on the 2 trim pins , but I am not sure . It doesnt do it on tilt only on trim .

 

[BruceH]

Can't give a technical reason, but can assure you I operated the 130HP Yamaha for 18 months and 100 hours. I got the same "shreek" noise occasionally from the trim rods (and it wasn't due to the trim beeen at their trim limit stop) however never had any failure of the trim/tilt system in the time I owned the Yammy....sold boat and engine to upgrade. According to the local Yamaha dealer this noise is not uncommon and does not indicate an inherit problem with trim/tilt system

 

[Dorado75]

I have the same sort of shrieking noise off my one Mariners trim pump, when i had the last service i asked the dealer why the one was louder than the other and he said that this happens with some engines and there is nothing to be worried about!

 

[robprid]

Thanks for the replys Dorado/Bruce

On another forum , somebody suggested that it is just the trim pins that need a bit of grease on the ends . I have cleaned them off and added some waterproof grease , so lets see what happens