Q&A: Will it damage a lawn mower engine if I start it with no blade installed?
Question by INV772: Will it damage a lawn mower engine if I start it with no blade installed?
I have a lawn mower I picked up on the side of the road for free. Looks like its almost brand new and they said it ran but I’m afraid to start it with no blade installed. Could it possibly damage the engine if I did?
Best answer:
Answer by Joe F
not at all.
What do you think? Answer below!
Briggs & Stratton 30W Engine Oil – 18 Oz. #100005
- “BRIGGS & STRATTON” ENGINE OIL
- 18 Oz.
- 4 Cycle .
- Tested & Approved By Briggs & Stratton For Use In All 4 Cycle Engines.
- High quality SAE30 detergent oil specially formulated for higher operating temperatures of air cooled engines.
Briggs Stratton Oil 30 W 20 Oz Bottle
Rating: 
(out of 1 reviews)
List Price:
Price: $ 2.17
Related posts:
- Lawn mower engine used for boat engine
- What is the difference between a snowblower engine and a lawn mower engine?
- Lawn Boy 89885 20-Ounce Premium Lawn Mower 4-Cycle Engine Oil
- What are the consequences if I overfill with oil on a lawn mower engine?
- My toro lawn mower keeps flooding how do I fix it? The engine is a 4.5. I changed the blade, tipped it on sid?
- My lawn mower engine surges when it is at full throttle and the blades are engaged?
- Can You Replace A Electric go kart engine with a lawn mower engine?
- Q&A: Lawn mower wont start. Its a Poulan Pro PR625Y22RKP.?
- How to Fix Your Lawn Mower Equipped with Briggs & Stratton Engine
- Green Earth Technologies 01108 G Oil 2-Cycle Engine Oil 8 oz
when i buld engine i don,t have the blade on. so go ahead and started it up.
You can run it without a blade. What would damage a engine is a blade that is badly off balance.
You can start it to see if it runs, but don’t run it long without a blade. It may overspeed but I would be more concerned about the crankshaft balance provided by the blade. The blade acts as a harmonic balancer when it is installed.
Hmm, no, you probably can’t hurt it. You probably won’t be able to get it running at all. The flywheel on push mowers is just aluminum, they use the blade to provide the inertia to keep the motor spinning on the compression stroke. An engine that is designed to run no-load will have a cast iron flywheel, to provide inertia.
yes, it will. The engine is balanced with the blade on it. IF you run without the blade, the engine will (could) vibrate itself to pieces.
you need a blade on it to start. the blade is the balance for the engine