Question about Makita Saws
Petrol driven hand saw for cutting concrete & masonry etc.
Go to the Makita home page at:
http://www.makitatools.com/en-us/Modules/Home/Default.aspx. Use the search box at the top right to look up your model. It will show it is discontinued but if you select it you will be able to view or download the parts breakdown and owner's manual.
Posted on Oct 31, 2012
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Posted on Jan 02, 2017
I'm a retired engineer and work PT as a tool tech for an HD rental ctr.
Compression on a new cylinder/piston is 160 psi. When it drops into the 130~140 psi range the saw becomes hard to start. Below 130 the saw will not run properly and at 90 they are toast. This is mainly due to improper fuel/oil mix (must be one bottle of 50:1 synthetic oil per gallon of regular gas. I use 6 bottles to 5 gallons for addition protection). Because this type of tool works in extremely harsh conditions (concrete dust) it is also imperative to keep the air filters clean. Wash the foam pre-filter after each use with plain water from a garden hose and discard after operating 6 times. Toss away (change with new) the paper filter if dust is present or when changing the pre-filter. Also check the carb hose to the cylinder inlet for cracks. My cost to get a cylinder/piston from Makita runs app. $130. When looking into the cylinder, streaks on the exhaust side indicate improper fuel/oil mix. Streaks on the intake indicate dirty air intrusion.
Posted on Nov 30, 2010
SOURCE: Ive got a Makita concrete
The manual says to mix it 100:1 if using Makita high performance oil or 50:1 using regular Makita 2 stroke oil. I'd go 50:1 with non Makita oil too.
Here is a site to download a pdf manual if you need it.
Posted on Feb 18, 2011
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