{"product_id":"john-deere-340-440-liquifire-snowmobile-manual","title":"John Deere 340 \u0026 440 Liquifire Snowmobile Operator's Manual","description":"\u003c!-- YOAST SEO FIELDS --\u003e\u003c!-- Focus keyword: John Deere 340 440 Liquifire manual --\u003e\u003c!-- SEO title: John Deere 340 \u0026 440 Liquifire Operator's Manual PDF --\u003e\u003c!-- Meta description: First-generation John Deere 340 \u0026 440 Liquifire snowmobile operator's manual (OM-M6673, Kioritz engines). Operation, maintenance, fuel mix, troubleshooting \u0026 full specs. Instant PDF download. --\u003e\n\u003ch2\u003eJohn Deere 340 \u0026amp; 440 Liquifire Snowmobile Operator's Manual\u003c\/h2\u003e\n\u003cp\u003eThis operator's manual covers the first-generation John Deere 340 and 440 Liquifire snowmobiles — the Kioritz-powered machines of the late 1970s — in roughly 52 pages of owner operation, maintenance, troubleshooting, storage, and specifications. Originally published by John Deere as part number OM-M6673 (Issue E6) and delivered here as an instant PDF download you can read on any device or print for the shop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCoverage:\u003c\/strong\u003e John Deere 340 Liquifire \u0026amp; 440 Liquifire (first-generation, Kioritz engines)\u003c\/p\u003e\n\u003ch3\u003eAbout the John Deere 340 \u0026amp; 440 Liquifire\u003c\/h3\u003e\n\u003cp\u003eThe Liquifire was John Deere's liquid-cooled performance sled and is one of the most sought-after machines on the vintage circuit today. It ran in two distinct generations: a first run from 1976 to 1978 powered by Kioritz two-stroke twins, and a second run from 1980 to 1984 powered by the John Deere\/Kawasaki \"Fireburst\" TC 440 A. This manual covers the \u003cem\u003efirst\u003c\/em\u003e generation — both the 340 and the 440 — and the KEC 340\/23ALC and KEC 440\/23ALC engine designations shown in its specifications correspond to the 1977 model year in John Deere's records.\u003c\/p\u003e\n\u003cp\u003eThe 340 Liquifire used a 339 cc Kioritz twin (58 mm bore × 64 mm stroke); the 440 used a 438 cc Kioritz twin (66 mm bore × 64 mm stroke). Both engines were built for John Deere by Kioritz Corporation of Tokyo, Japan, breathed through dual Mikuni carburetors, and drove a Comet 102C two-sheave variable transmission with a mechanical disk brake and slide suspension. The two models shared the same chassis, body, and 8-gallon tank, differing mainly in displacement and final drive ratio (1.86:1 on the 340, 1.67:1 on the 440). John Deere's snowmobile line was sold to Polaris and production ended in the mid-1980s, which is why original documentation for these distinctive green, black, and yellow sleds is increasingly scarce.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: if your Liquifire is a 1980–1984 model with the Kawasaki \"Fireburst\" engine, you'll want the second-generation manual (OM-M68919) instead — see the link below.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat This Manual Covers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety \u0026amp; identification:\u003c\/strong\u003e Safety precautions, owner introduction, and snowmobile identification (model and serial number location).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls \u0026amp; operation:\u003c\/strong\u003e Control layout plus full operating instructions — starting, running, and handling the machine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService interval chart:\u003c\/strong\u003e A maintenance schedule laying out what to service and when.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e The manual's largest section — routine upkeep covering the engine, fuel and ignition systems, drive components, suspension, and track.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTroubleshooting:\u003c\/strong\u003e A diagnostic guide for tracing common running and starting problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Off-season storage and pre-season preparation procedures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessories:\u003c\/strong\u003e Factory accessories available for the 340 and 440 Liquifire.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecifications:\u003c\/strong\u003e Complete factory specs for both models — engine, fuel system, chassis, track and suspension, power train, electrical, and fuel\/oil premix ratios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe snowmobiling guide:\u003c\/strong\u003e A general guide to safe operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy This Manual Matters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCovers both displacements.\u003c\/strong\u003e One manual handles the 340 and the 440 Liquifire together, with the spec differences between them spelled out — useful whichever one you own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect for the Kioritz generation.\u003c\/strong\u003e This is the first-generation (1976–1978) book, so the procedures and specs match the Kioritz-engined sled rather than the later Kawasaki Fireburst — an important distinction when sourcing parts and tuning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-stroke premix done right.\u003c\/strong\u003e The fuel-and-oil mixture tables (40:1 and 50:1, in both U.S. and Canadian measures) are exactly the reference a vintage two-stroke owner needs to mix fuel correctly and avoid engine damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe maintenance an old sled actually needs.\u003c\/strong\u003e Carburetor, ignition, drive-belt, and track service are the recurring jobs on a 40-plus-year-old Liquifire, and the service-interval chart keeps them on schedule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScarce documentation.\u003c\/strong\u003e With production long ended, factory manuals for these machines are hard to find — this PDF puts the original operator's manual back in your hands.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eManual code:\u003c\/strong\u003e OM-M6673 (Issue E6)\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCustomers Also Bought\u003c\/h3\u003e\n\u003c!-- TODO: swap placeholder hrefs for live agmanuals.com product\/collection URLs --\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"#\"\u003eJ\u003c\/a\u003e\u003ca title=\"John Deere 440 Liquifire Snowmobile Operator's Manual\" href=\"https:\/\/agmanuals.com\/products\/john-deere-440-liquifire-snowmobile-operators-manual\"\u003eohn Deere 440 Liquifire Operator's Manual (1981 \/ Fireburst, OM-M68919)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/agmanuals.com\/pages\/340-and-440-liquifire-specs\" title=\"340 \u0026amp; 440 Liquifire Snowmobiles Specifications\"\u003eJohn Deere 340 \u0026amp; 440 Liquifire Specifications (Specs Page)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Ag Manuals","offers":[{"title":"Operator's Manual","offer_id":52148851278104,"sku":"JD-340-440-LQFSM-OM","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0193\/4424\/files\/Pagesfrom340-440-liquifire-sm-opt.png?v=1780767499","url":"https:\/\/agmanuals.com\/products\/john-deere-340-440-liquifire-snowmobile-manual","provider":"Ag Manuals, LLC","version":"1.0","type":"link"}