Question about Troy-Bilt 4-Cycle Curve Shaft Gas String Trimmer #41ADT41C966
The TB21 is a 2 cycle trimmer, not a 4 cycle. Gas mixture ratio is 40:1
Be careful not to over add oil and or run it on straight gas the sparkplug will foul with too much oil, and overheat and seize the piston in the cylinder on
Posted on Jun 21, 2012
4 cycle engines do not run on mixed fuel. Run on straight fuel. They have a spot to put oil in just like a lawn mover, and should be changed regularly. @ stroke engines run on mixed fuel.
Posted on Sep 28, 2010
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Posted on Jan 02, 2017
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