Trimmer Repair - Replacing the Crankshaft Bearing (Echo Part # 9403536201)
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- Опубликовано: 12 сен 2024
- www.ereplacemen...
Click here for more information on this part, installation instructions and more.
This particular crankshaft bearing is specific to Echo manufactured brands, including Echo and Shindaiwa. To find a crankshaft bearing specific to your model, visit eReplacementParts.com.
If your straight shaft trimmer is showing any of these symptoms; replacing the crankshaft bearing could solve your problem:
1) Excessive vibration
2) Smoke coming from the engine
3) Engine not turning over
4) Starter rope stuck
5) Engine not starting
6) Bearing seizure
7) Engine dies suddenly
eReplacementParts.com part number: 9403536201
Tools used for this repair/replacement:
1) Receptacle for draining fuel
2) Torx wrenches
3) Spark plug wrench or socket
4) 10mm wrench (or adjustable)
5) Long-nosed pliers
6) Rubber mallet
7) Standard screwdriver
8) Starter rope (or similar)
9) Adjustable pliers
10) Flat-blade screwdriver
11) Socket set
12) 2-cycle oil (for lubricating seals)
13) Razor blade (to scrape gasket surface)
14) Ignition gapping gauge
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[ VIDEO TRANSCRIPT ]
Hi, I’m Mark from eReplacementParts.com. In this video, I’m going to show you how to replace the crankshaft bearings on an Echo trimmer. The crankshaft bearing provides the bearing surface between the crankshaft and the crankcase. These bearings are typically very durable, but with extreme use, you can wear them out. More common reasons that the bearing would need to be replaced are an engine that’s been run without oil in the gas. That can cause the bearing to seize. Or an engine that’s suffered from dirt ingestion. The dirt can wear away at the bearing.
Replacing the crankshaft bearings can be a somewhat difficult repair, but if you follow our instructions, you should be able to do it yourself. Crankshaft bearings, as well as many other parts, can be found on our website. Let’s get started.
I’ll begin by removing the air filter cover and the air filter. Before we remove any of the fuel lines from either the carburetor or the fuel tank, you’ll want to make sure you drain the gas from the fuel tank. Otherwise, it will leak, as the fuel in the tank tends to be slightly pressurized. I’ve already drained the fuel, so we can go ahead and move on.
Next, I’ll remove the air filter bracket, as well as the air filter base. They’re secured with two screws. There’s the air filter base, and the air filter bracket. Now I’ll remove the throttle cable and the fuel lines from the carburetor. Pull that away from the carburetor, as well as the throttle cable. And on the underside, I’ll remove the fuel lines.
Between the carburetor and the isolator block, is the intake gasket, and that’ll just usually fall away, or you may have to pull it or scrape it away from the isolator block, or the carburetor. Now I’ll go ahead and remove the isolator block. Now I’ll remove the spark plug boot and the spark plug. Now I’ll remove the motor housing. It’s held in place with two screws. Now I can remove the insulator gasket. Now I’ll remove the starter. There’s four screws on the back, one on the side, and one between the fuel tank and the starter.
Now I’ll remove the fuel tank. It’s secured with two screws. Now I’ll remove the air duct. There’s just one more screw securing it. Now I’ll separate the clutch and shaft assembly from the engine. First, I’ll go ahead and disconnect the ignition wires. They just pull apart. And now I’ll remove the four screws that secure the clutch housing to the engine. I’ll just give the motor a couple of taps with the mallet. And it’ll slide apart. Now I’ll remove the clutch. But I can’t just simply thread it off the spindle, because, as I turn the clutch, the motor will just spin. So I need to bind up the motor. To do that, I’ll put a piece of starter rope into the cylinder through the spark plug hole. The rope will take up the space between the piston and the top of the cylinder and bind the engine....
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OMG Mark, is there nothing you don't know how to repair. It's been awhile since I last saw you repair something. This has got to be the most complicated repair yet. For a minute there, I thought you were going to remove every last nut bolt and screw to get to the bearing : - ) . Great video and great work on your part. I don't own one of these trimmers, but it sure was entertaining to watch you.
Great video! Very well shot and edited. Very detailed! Thanks!
This is a fantastic video. l really enjoy all of your presentations keep up the good work. l have purchased parts in the past and will continue to do so.
Thanks.
Excellent video! Thank you!
great video you saved me from having to buy a new trimmer .
Great video needed to see this one.
Really informative. Thank you!
I just got it put back together and it started after about 20 pulls. It ran great after the warmup. I never could have done it without ereplacementparts.com
What would be some symptoms that would lead you to this repair? The reason I'm asking...I have an Echo SRM-260 trimmer and it's very hard to pull the starter rope. The piston isn't seized up because I can pull the rope it's just extremely hard! I can't begin to pull it fast enough for it to start. Feels like it's dragging bad. Thanks....
+Bryan Avey This sounds like the fuel/oil mixture was pretty lean or at some point the wrong oil was used. Either way, I would pull the head assembly off and take a look at the Cylinder and Piston and Rings. These should both be smooth.
+eReplacementParts.com Thanks for the info....I'll check them out.
you should be more careful with your crankshaft it can go out of balance if your not carefully and that can make your crankshaft bearings go bad faster