Stevan47
Well-known member
- Joined
- Nov 25, 2013
- Messages
- 202
- Fluid Motion Model
- C-24 C
- Non-Fluid Motion Model
- Recently sold R21-EC
Dear whomever: I am a new R21 EC owner. The vessel is powered by a 3YM30 engine. It has a Johnson F4B - 903 sea water pump. The engine has around 44 hours on the clock. Engine Serial# E13694. Not sure of year of boat manufacture and engine installation - possibly 2010?
I think the drive belt is a little loose and I would like to tighten it. The owners manual does not specify how to do this and I have not yet obtained a workshop/service manual. I have got down and inspected the piping and securing bolts/brackets. Looking at the engine from the front end, I can see a bolt to the rear and right (sea water outlet) side of the pump. Likewise, on the left (sea water inlet) side there is a bolt and nut securing a sliding bracket. Are these the two adjustment points for tensioning the drive belt?
Do I also need to loosen the alternator securing bracket - this does not appear to me to be the case, but I could well be mistaken. The pump is working well and there is sufficient sea water discharging with the exhaust, however I do not want to wait until the belt becomes too loose to grip the pulley. I would appreciate your advice.
Kind regards - Stevan Coll.
Email address: stevan47@live.com.au.
I think the drive belt is a little loose and I would like to tighten it. The owners manual does not specify how to do this and I have not yet obtained a workshop/service manual. I have got down and inspected the piping and securing bolts/brackets. Looking at the engine from the front end, I can see a bolt to the rear and right (sea water outlet) side of the pump. Likewise, on the left (sea water inlet) side there is a bolt and nut securing a sliding bracket. Are these the two adjustment points for tensioning the drive belt?
Do I also need to loosen the alternator securing bracket - this does not appear to me to be the case, but I could well be mistaken. The pump is working well and there is sufficient sea water discharging with the exhaust, however I do not want to wait until the belt becomes too loose to grip the pulley. I would appreciate your advice.
Kind regards - Stevan Coll.
Email address: stevan47@live.com.au.