Why 4-Cycle Trimmers Are a No Go

Category: Homefront | Comments Off on Why 4-Cycle Trimmers Are a No Go


While 4-Cycle trimmers offer easier starts, better low RPM torque and no need to use a mixture of gas and 2-Cycle oil for fuel, there is a fatal limitation:

If you use your trimmer for flat areas (horizontal) and rotate the trimmer for side edging (vertical) or point it up or down, you change the position of the crankcase from the bottom of the engine to another position.  4-Cycle engines need crankcase lubrication from the bottom. Unless the crankcase remains at the bottom of the engine, a 4-Cycle engine will be starved of lubricants and will eventually seize up and suffer irreparable damage.

If you do use a 4-Cycle trimmer, always reposition the accessory tool on the shaft when switching between horizontal and vertical trimming use. You can never use a 4-Cycle trimmer pointed upward or downward. Always keep the 4-Cycle engine flat, with the crankcase at the bottom. Even in storage.

A 2-Cycle engine is lubricated with its fuel. It can operate on flats (horizontal), edges (vertical), pointed up, or pointed down. A 2-Cycle engine can operate at all angles, tilts, and attitudes – to meet your trimming needs.

A 4-Cycle engine – requiring frequent rotation adjustments of the tool shaft during use to keep the crankcase at the bottom, are a no go, unless your use of the trimmer always requires just one position for the trimmer tool attachment.

An early sign of pending 4-Cycle trimmer engine destruction is oil appearing at the carburetor / air filter area and low oil levels.

If you need to trim weeds at multiple angles and attitudes – use a 2-Cycle engine powered trimmer.

You must be logged in to post a comment.

Name (required)

Email (required)


XHTML: You can use these tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

Share your wisdom


"Anyone who still wants guns, rifles or ammo should go to Traction Control/Well-Regulated Militia: http://tinyurl.com/2ea4lhn Still pre-panic prices and a huge inventory and good reliable service. Tell everyone you know"

Posted by: DAve at December 23, 2012 02:55 PM (XDC0v) at AoSHQ


Top 100 Gun Blog


Join the NRA

Support the TSRA

  • Political Continuum

  • Unorganized Militia Propaganda Corps