needle settings and plug for XTM 24.7?
04-04-2003, 09:06 AM
#1
needle settings and plug for XTM 24.7?
I just bought the XTM 24.7 engine, but the documentation does not list what the needle settings should be for the initial break in.
Those of you using this engine: Did you just go with the factory settings?
Also, the manual suggests using a hot plug for break in. I already have an O.S. #A3 Glow Plug (medium heat range) that I was planning to use. Should I go out and try to find a hotter plug? The LHS's in my area have a very limited selection.
thanks for any input
Those of you using this engine: Did you just go with the factory settings?
Also, the manual suggests using a hot plug for break in. I already have an O.S. #A3 Glow Plug (medium heat range) that I was planning to use. Should I go out and try to find a hotter plug? The LHS's in my area have a very limited selection.
thanks for any input
04-05-2003, 08:37 AM
#2
Tech Apprentice
3 for high end needle and 8 for low end. The OS A3 should be fine.
Your running temp should be less than 300F during the run in period.
I also have this engine but I must say it's been giving me endless headaches. It's extremely difficult to tune and susceptible to airleaks. The needle settings also don't seem consistent as I have to retune it all the time. I half half the mind of thrashing this motor even though it's been through less than half a gallon of fuel.
Your running temp should be less than 300F during the run in period.
I also have this engine but I must say it's been giving me endless headaches. It's extremely difficult to tune and susceptible to airleaks. The needle settings also don't seem consistent as I have to retune it all the time. I half half the mind of thrashing this motor even though it's been through less than half a gallon of fuel.
04-07-2003, 07:37 AM
#3
I am having problems with mine as well.
During the break-in, the motor was running great, but I noticed that the pull-start sometimes wouldn't catch. This problem has quickly gotten progressively worse.
After looking at many of the posts on the xtm 24.7 web board, I find that I am not alone with this issue.
Yesterday, I removed the pull-starter to see if I could find the problem. What I found was an unpleasant surprise. The problem is not being caused by the one-way bearing failing to engage the pull-start shaft. The one-way bearing is failing to engage the crankshaft/connecting rod. There were visible scratches along the edge of one of the slots that should mesh with the crankshaft/connecting rod.
I have notified XTM of the problem and am interested to see what they are going to do.
Anyone thinking about purchasing this engine should check out the XTM 24.7 web board first. I wish I had.
the URL is:
http://globalservices.globalhobby.co...wforum.php?f=4
During the break-in, the motor was running great, but I noticed that the pull-start sometimes wouldn't catch. This problem has quickly gotten progressively worse.
After looking at many of the posts on the xtm 24.7 web board, I find that I am not alone with this issue.
Yesterday, I removed the pull-starter to see if I could find the problem. What I found was an unpleasant surprise. The problem is not being caused by the one-way bearing failing to engage the pull-start shaft. The one-way bearing is failing to engage the crankshaft/connecting rod. There were visible scratches along the edge of one of the slots that should mesh with the crankshaft/connecting rod.
I have notified XTM of the problem and am interested to see what they are going to do.
Anyone thinking about purchasing this engine should check out the XTM 24.7 web board first. I wish I had.
the URL is:
http://globalservices.globalhobby.co...wforum.php?f=4
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