Breaking It Down Without the Paperwork Headache
The Craftsman 358 is one of those chainsaws that shows up everywhere. Home Depot parking lots, suburban driveways, rental equipment sheds. You grab it because it's cheap and someone at the hardware store told you it would cut firewood. It does, mostly. The manual that comes with it is another story entirely. Print quality varies by batch, diagrams are sometimes misaligned, and the troubleshooting section reads like it was translated from French back into English and then proofread by someone who'd never touched a two-stroke engine. I've worked through three different revisions of this manual over the years, and the version you have on paper might not match what's actually in your saw. That matters more than it sounds like it should.
Where to Find the Craftsman 358 Chainsaw Manual
The most reliable source right now is the Sears Parts Direct website. They host the official PDF and it tends to get updated when Craftsman revises the documentation. The direct URL is usually something like searspartsdirect.com with the model number 358.351xxx as a prefix. You can also find copies on manualsexchange.com and manualslib.com, but those are community-uploaded and sometimes contain outdated pages or missing sections. If you're downloading one of those, cross-reference the page count and make sure the wiring diagram for the ignition switch is included. The community versions often drop that. There's also a direct link to the Craftsman owner's center at craftsman.com/owners-center. You enter your model number and it serves up the current document. This is the cleanest option if it works. It doesn't always work because the site has been known to 404 on older models like the 358 series, which were phased out years ago.
What the Manual Actually Covers
The Craftsman 358 Chainsaw Manual runs about 24 to 30 pages depending on the revision. It covers starting procedure, chain tensioning, lubrication system setup, the bar and chain specifications, and basic maintenance intervals. The ignition system section is surprisingly decent for a budget tool manual. It shows the spark arrestor screen location, explains how to set the choke and run positions on the carburetor, and gives you the spark plug gap specification, which is 0.025 inches. That last one people miss constantly and it causes more no-start issues than anything else in this saw. One thing the manual gets wrong or at least poorly explains is the warm-start procedure. It tells you to pull the starter cord repeatedly until the engine fires, which is technically correct but practically useless if you're standing in a cold driveway at 7 AM trying to cut a stack of oak that's been there since November. Here's what actually works: warm the engine for about ten seconds with the choke on, then flip it to run, then pull once. If it doesn't catch, let it sit for thirty seconds and try again. The problem isn't the procedure in the manual, it's that the carburetor on these things runs rich when cold and flooding is the most common failure mode people report. They keep pulling the cord with the choke engaged and drown the plug before they ever realize that's what's happening. Chain tension is another area where the manual is technically accurate but practically frustrating. It says to tighten the bar nuts, adjust the tension screw until the chain drags slightly against the bar, and then check by pulling the chain around the middle of the bar. What it doesn't tell you is that the tension changes noticeably between a cold saw and a hot saw. A chain that's properly tensioned when cold will be loose enough to hop off the bar within the first five minutes of cutting once the metal expands. I learned this the hard way on a jobsite in August. Finished a cut, set the saw down, came back two minutes later, and the chain had walked right off the bar because I'd tensioned it cold. Now I always run the saw for about thirty seconds after startup, shut it off, and recheck tension before I start cutting.
Get the Full Details
The Carburetor Section That Nobody Reads
The manual identifies the carburetor as a Walbro-style unit with H and L screw adjustments, though it doesn't explicitly name Walbro. The H screw controls the high-end fuel mixture and the L screw controls idle and low-end response. Here's the counter-intuitive part that everyone misses: on the 358, the L screw affects more than just idle. Because this is a small-displacement, carbureted two-stroke with a diaphragm-style fuel pump, the low-end circuit is active from idle through about three-quarters throttle. If your saw bogs when you're mid-cut and then surges back, that's an L screw problem, not an H screw problem. People turn the H screw thinking it's a power issue, which makes the top end run hotter and leaner and can melt the piston if you're not paying attention. The factory baseline setting for both screws is two and a half turns out from fully seated. From there you adjust. If you've never touched the carbs on one of these, start at that mark and work from there. Don't start with them wide open or cranked all the way down. The fuel passages in these Walbro units are small enough that a single grit of ethanol-contaminated fuel can throw off your adjustment range by causing the mixture to jump between rich and lean as the diaphragm pulses.
Bar and Chain Specs
The 358 comes with either a 16 or 18 inch bar depending on the exact sub-model. The chain pitch is .325 inches, the gauge is 0.050 inches, and the drive link count is 56 for the 16-inch bar and 62 for the 18-inch bar. The manual lists these numbers somewhere in the first dozen pages buried in a table, and most people skip straight to the parts diagram. If you buy the wrong chain gauge, you'll find out quickly because it won't seat on the bar sprocket at all. The .325 pitch versus .375 pitch difference is the most common mistake I see when people replace chains on these saws, usually because the old chain got stripped and they grabbed whatever was on the shelf at the store without checking. Oil chain is the other thing the manual glosses over. The 358 uses a standard internal gear-driven oil pump. There's no external adjustment dial on the pump body itself. The flow rate is controlled by a screw inside the pump housing, and on the factory configuration it's set pretty conservative. If you're running a long bar in dusty conditions and the chain is running dry by the end of a two-hour session, you need to adjust the pump. The manual mentions the pump exists but doesn't give you the adjustment procedure, which is why I'm writing it here. Remove the side cover, locate the pump drive gear, and there's a small setscrew that actuates the pump plunger. Turn it clockwise in quarter-turn increments, test, and stop when you see a visible oil line on the bar after five minutes of running. Over-oiling is worse than under-oiling here because excess oil flings onto everything and attracts sawdust that turns into paste on the drive links.
Spark Arrestor Maintenance
This is the single most neglected maintenance item on the 358 and the single most likely thing to cause a no-start condition that nobody can explain. The spark arrestor screen is a tiny mesh screen inside the exhaust muffler. Resin and carbon buildup clog it over time, and when it's partially blocked the saw will run fine at idle but die under load. People think they need a carburetor rebuild and replace gaskets and clean jets only to discover the real problem was a screen that looked fine from the outside but was sealed shut on the inside. The manual tells you to check it periodically. Periodically is not a useful instruction. On a saw used for occasional firewood cutting, clean the screen every twenty hours of operation. If you're cutting green hardwood or resinous softwood, do it every ten hours. It takes about four minutes with a wire brush and some compressed air. I keep a spare screen in the saw case because they tear during cleaning if you're not careful.
Known Issues the Manual Doesn't Address
Three things will break on this saw that aren't covered in any version of the manual. The first is the starter rope. It's a standard diameter but the rope gets abrasive from the aluminum pulley groove, and the groove itself deepens over time until the rope starts fraying. If your starter rope is fraying faster than expected, check the groove depth. A sharp edge in the groove will slice through the rope in a single refuel cycle. The fix is a fine file to smooth the groove or a pulley replacement if it's already cut deep. The second issue is the clutch drum. The internal threads where the clutch drum mounts to the crankshaft are aluminum. If you overtighten the clutch while the saw is running, or if you use an impact driver without a torque limit, those threads strip. I've seen this twice on 358s, both times on saws that had been used for limbing work where the operator was pulling the bar sideways against tension. The symptom is a clutch that won't stay tightened and the bar nut backing off during operation. If this happens, the only real repair is a crankcase replacement unless you're willing to install a helicoil insert, which is doable but requires removing the engine from the handles. The third problem is the fuel line primer bulb cracking. These are rubber bulbs and ethanol fuel degrades them faster than the manual suggests. If you're priming and the bulb feels hard instead of squishy, or if you can see a hairline crack in it, replace it. The fuel lines themselves are standard 3/16 inch ID fuel tubing, but the primer bulb assembly is specific to the Walbro carburetor mount and needs to be ordered as part of a carb rebuild kit rather than separately, which is annoying. A complete carb rebuild kit for this saw runs about twelve dollars and includes the gaskets, the primer bulb, and the diaphragms.
When to Walk Away From This Saw
The Craftsman 358 is a residential-duty saw. It will handle firewood cutting, limbing, and general property maintenance. It is not designed for professional logging work or sustained cutting operations. The cylinder wall is relatively thin, the cooling fins are minimal, and the air filter is a foam element that restricts airflow quickly in dusty conditions. If you're using this saw for more than a few days a month or cutting more than a cord of wood per session, you'll outgrow it and it will start showing wear that no amount of maintenance can prevent. At that point the manual becomes irrelevant because the issues are mechanical wear, not user error. A reasonable upgrade path if you find yourself needing more power is looking at a Stihl MS 250 or a Husqvarna 440 series. Both are in the same price range when bought new, run significantly cooler under load, and have spare parts availability that actually makes sense. The 358 is fine for what it is. It's just important to know what it isn't.
Quick Reference Settings
Spark plug gap: 0.025 inches. NGK BM7A or equivalent. Fuel mixture: pre-mixed 50:1 with quality two-stroke oil. Chain oil: SAE 30 weight chain and bar oil. Oil pump setting: factory default is adequate for standard bar lengths. Adjust only if chaining oil consumption is visibly insufficient after verifying the oil passage is clear. Idle speed: engine should not accelerate when throttle is released, chain should not rotate at idle. If the chain moves at idle, back the L screw out in eighth-turn increments until it stops. If your manual is missing pages, has water damage, or the diagrams don't match your saw, the PDF versions I mentioned above are worth downloading and keeping on your phone. Printing from the PDF sometimes produces sharper diagrams than the original document, which is a weird coincidence but one I've noticed across several Craftsman manuals.
