Foreword KMR 1250 B, LPG, D Foreword Good servicing requires extensive and relevant training as well as comprehensible reference documents. We therefore offer basic and advanced training courses for the full range of our products to all service technicians on a regular basis.
Unit Functions KMR 1250 B, LPG, D Drive system Suction and filtering system – When the hood is lifted up toward the rear, all – Dust pickup at brush roller. components become accessible for mainte- – Large-capacity dust filter with mechanical dust nance purposes.
Engine 1250 D With the exception of the different engine type, the unit is identical to the basic KMR 1250 B version. – Single-cylinder, air-cooled diesel engine (YAN- MAR L 70 AE-DE) w/ electric starter.
Unit Functions KMR 1250 B, LPG, D View from front Gas cylinder (LP Gas) Steering wheel Driver seat Lifting mechanism for debris container Rear wheel, chain-driven Fuel tank for KMR B / D Engine KMR B / LPG / D...
KMR 1250 B, LPG, D Unit Functions Controls 16 17 Lever dust pickup, Close / Open 12 Lever brush roller, Raise / Lower (suspension: rigid or floating) Button clean dust filter (S2) 13 Lever RH side brush, Raise / Lower...
Unit Functions KMR 1250 B Gasoline Engine (HONDA GX 270) Stop screw, throttle valve 12 Emulsion tube Idle jet 13 Air orifice Bypass 14 Float chamber Throttle valve 15 Main jet Idle orifice 16 Adjusting screw, idle mixture Idle jet bore and idle air channel...
KMR 1250 B Unit Functions Gasoline Engine (HONDA GX 270) Float system Full load operation When float chamber (14) is empty, fuel passes In full load operation, the throttle is wide (4) open: from fuel tank into float chamber (14) via the float –...
Unit Functions KMR 1250 B, LPG, D LP Gas Engine (HONDA GX 270) Valve guard 10 Engine LP gas line 11 Vacuum line Cylinder shutoff valve 12 LP gas line Outlet tube 13 Gas filter LP gas cylinder 14 Solenoid valve, gas supply Sun shield 15 Mixture control screw (MIN eng.
KMR 1250 B, LPG, D Unit Functions LP Gas Engine (HONDA GX 270) Gas system – The presence of frost on any part of the LP gas system indicates a possible leak. Close the – Opening the shutoff valve (3) on the LP gas cylinder shutoff valve (3) immediately.
Unit Functions KMR 1250 B, LPG, D Diesel Engine (YANMAR L 70 AE-DE) Drive shaft Injection system Housing, engine The injection pump (8) delivers fuel to the injec- tor nozzle (5) via fuel line (6). The fuel, is then Piston...
KMR 1250 B, LPG, D Unit Functions Diesel Engine (YANMAR L 70 AE-DE) Injection pump The injection cam on the camshaft shuttles the injection pump piston (1) back and forth. Fuel is conveyed to the injection nozzle via pressure valve (7).
Troubleshooting Information KMR 1250 B, LPG, D Starter Fails to Turn Engine Check fuse F1/F2 Fuse F2 protects the entire control voltage cir- cuitry. This fuse is located on the A1 circuit board. – Check fuse and replace as required.
KMR 1250 B, LPG, D Troubleshooting Information Starter Fails to Turn Engine Check starter M1 – Hold ignition switch in position II. – If a voltage is present but starter fails to turn, starter is defective and must be replaced.
Troubleshooting Information KMR 1250 B, LPG, D Starter Fails to Turn Engine Check regulator ORIGINAL When the engine is running, the alternator gener- ates a continuous current flow. The regulator automatically adapts this current as required (depending on battery charge status and electri- cal load).
KMR 1250 B, LPG, D Troubleshooting Information Starter Turns Engine but Engine Fails to Start Checking S3 seat contact switch Note: Actuating the starter without a load on the seat will crank the engine but not start it! – Disconnect wire connections from seat con- tact switch.
Troubleshooting Information KMR 1250 B, LPG, D Starter Turns Engine but Engine Fails to Start Check compression release lever (diesel engine) – Engine is equipped with compression release lever. During engine starting, it can be actu- ated for a short while to ease overcoming engine resistance at top dead center.
KMR 1250 B, LPG, D Troubleshooting Information Engine Runs but Machine Fails to Move Transmission drive belt The transmission drive belt tension is adjusted by means of the tension roller. The drive belt must be sufficiently tight so that it will not wow through more than 3 to 8 mm (0.12-0.32 in) when...
Troubleshooting Information KMR 1250 B, LPG, D Engine Runs but Machine Fails to Move Checking drive pedal ORIGINAL A linkage connects the drive pedal to the shift lever (2) on the transmission (7). When the drive pedal is not actuated, the shaft-mounted leg spring (6) always returns this lever to the center position .
KMR 1250 B, LPG, D Troubleshooting Information Engine Runs but Machine Fails to Move Checking drive pedal REVISED A linkage connects the drive pedals to the shift lever (4) on the transmission (1). When the drive pedals are not actuated, the pull spring (3) al- ways returns this lever to the center position.
Troubleshooting Information KMR 1250 B, LPG, D Engine Runs but Machine Fails to Move Adjust hydrostatic transmission Starting with serial no. 11482 to serial no. 11882, the hydrostatic transmission (1) is installed in a slanted position. As the slant is not adjustable, engine and transmission drive belts may fail after a short while.
KMR 1250 B, LPG, D Troubleshooting Information Engine Runs but Machine Fails to Move Insert hydrostatic transmission Note: Starting with serial no. 10 053, the transmis- sion is slanted forward, putting less strain on the drive belt. Check and observe parking brake effectiveness and belt tension when a new transmission is in- stalled.
Troubleshooting Information KMR 1250 B, LPG, D Maintenance Procedures (gasoline and LPG engine) Note: For operating and maintenance instructions, consult the Operator Manual for this engine. Check engine oil level – Engine oil level must be between the MIN and MAX markings on the dipstick.
KMR 1250 B, LPG, D Troubleshooting Information Maintenance Procedures (gasoline and LPG engine) Operating RPM adjustment The engine operating speed (refer to „Specifica- tions“) is set by means of the adjustment screw (1). Once the setting is correct, the screw must be fixed with sealing lacquer.
Troubleshooting Information KMR 1250 LPG Maintenance Procedures (LPG engine) Set CO value (LPG engine) To adjust CO value, the following measuring de- vices will be needed: – Tachometer, P/N 6.491-361 – Exhaust analyser. Procure suitable CO an- alyser locally; requires measuring range up to 2% CO.
KMR 1250 LPG Troubleshooting Information Maintenance Procedures (LPG engine) 2. Set CO value at operating speed – Set accelerator lever on instrument panel to MAX position (operating speed). – Measure operating RPM and adjust via stop screw (6) on carburetor as required. Operat- ing speed has to be between 2600 and 2700 RPM (see also “technical specifications”).
Störungshilfe KMR 1250 D Maintenance Procedures (diesel engine) Note: For operating and maintenance instructions, consult the Operator Manual for this engine. Check engine oil level – Engine oil level must be between the MIN and MAX markings on the dipstick. Top up engine oil –...
KMR 1250 D Störungshilfe Maintenance Procedures (diesel engine) Operating RPM adjustment Engine operating speed (refer to “technical spec- ifications”) is set by means of the adjusting screw (1). With adjustments completed, the screw must be fixed by applying sealing lacquer. Governor adjusting screw CAUTION Governor spring (6) must be hooked...
Troubleshooting Information KMR 1250 B, LPG, D Parking Brake – No Function Adjust parking brake Note: With the parking brake released, there must be NO braking effect, and the wire and cas- ing cable (1) must be fully relaxed. The parking brake is required to securely hold the unit in place when applied on a grade of 25%, and with the unit loaded to capacity.
KMR 1250 B, LPG, D Troubleshooting Information Brush Roller – Poor Performance Check tire pressure Uneven tire pressure in the rear wheels causes the power sweeper to tilt sideways and run lop- sided. The result may be a substandard sweep- ing pattern and the cleaning result is not satisfy- ing.
Troubleshooting Information KMR 1250 B, LPG, D Brush Roller – Poor Performance Check sweeping pattern – Close dust pickup hatch. – Drive mobile sweeper onto dusty surface, and set parking brake. – Lower brush roller (lever in center position), and allow to run in place for a few seconds.
KMR 1250 B, LPG, D Troubleshooting Information Brush Roller – No Rotation Check / replace Brush roller In the event that wrap-around string or banded materials block the brush roller, the latter must be deinstalled and obstructions removed. Adjust drive belt tension rollers to allow approx. 10 mm depression of the respective drive belts.
Troubleshooting Information KMR 1250 B, LPG, D Side Brushes – Poor Sweeping Performance Check drive belt side brush The side brush is driven by elastic drive belt (5) via intermediate shaft (6). Belt replacement necessitates deinstallation of intermediate shaft (6) (see page 35, pos. 12).
KMR 1250 B, LPG, D Troubleshooting Information Excessive Unit Dusting Replace dust filter A noticeable deposit of dust at the impeller fan exhaust indicates a poorly installed or defective dust filter. – Raise debris container (1) to half of its travel, and secure against dropping.
Troubleshooting Information KMR 1250 B, LPG, D Excessive Unit Dusting Check filter receptacle A noticeable accumulation of dust in the engine compartment indicates a leaky filter receptacle. The seal ring (1) is defective or the three open- ings on flange (2) are too large, and protrude beyond the welded ring (3).
KMR 1250 B, LPG, D Troubleshooting Information Excessive Unit Dusting Check dust pickup – When sweeping on dry ground, the hatch (4) will be opened with the lever (8) to allow air to enter the impeller fan. – When sweeping on moist or wet ground, the hatch must be closed again to prevent mois- ture from entering the dust filter.
Troubleshooting Information KMR 1250 B, LPG, D Excessive Unit Dusting Check seal on filter housing Up until S/N 10033, the seal was applied to the impeller fan inlet. Later, in an effort to improve seal effectiveness, it was attached to the filter housing.
KMR 1250 B, LPG, D Troubleshooting Information Excessive Unit Dusting Adjust sealing lips / sealing strips in the sweeping area 10-20 mm The sealing lips and sealing strips serve essen- tial functions. They maintain the vacuum level in the sweeping area required for proper function- ing, ensuring dust-free sweeping operations at the same time.
Troubleshooting Information KMR 1250 B, LPG, D Filter cleaning Motor – No Function Check terminals (X 10 / X 11) in filter hous- Power for the filter cleaning motor is supplied via two spring-loaded contact terminals (1). With the debris container lowered, spring-load-...
KMR 1250 B, LPG, D Troubleshooting Information Hydraulic Unit – No Function Note: Troubleshooting may proceed with engine shut off. (60A) Check hydraulic unit Check F3 fuse. The F3 fuse protects only the hydraulic unit. It is located beneath the elec- trical box.
Troubleshooting Information KMR 1250 B, LPG, D Debris Container – Very Slow Ascent Check hydraulic unit By contamination within the hydraulic system, the debris container can no longer be raised after a brief operating period. The fine orifices in the hydraulic unit are blocked.
KMR 1250 B, LPG, D Troubleshooting Information Debris Container – No Full Ascent Adjust pressure relief valve Raise empty or full debris container to maximum attainable height (two-hand operation). In this position hold on the two buttons and measure the current draw of the hydraulic unit (see “tech- nical specification”).
Troubleshooting Information KMR 1250 B, LPG, D Excessive Steering Free Play Adjust steering free play Wear and tear and stretching of the steering chain (1) may cause excessive steering free play. If steering free play becomes too large, the steering...
KMR 1250 B, LPG, D Troubleshooting Information...
KMR 1250 B, LPG, D Maintenance Procedures for B, LPG & D Models Täglich Daily 6 bar Wartung Maintenance KMR 1250 Wöchentlich Alle 100 h Weekly Every 20 mm Maintenance intervals Every 100 hours Maintenance procedures are performed at the –...
KMR 1250 B, LPG, D Maintenance Procedures for B, LPG & D (after operating hours) Maintenance procedures 1000 Engine oil - check Main drive belt tension - check Main drive belt - replace Engine air cleaner - clean / replace...
KMR 1250 B, LPG, D Technical specifications Service weight (operational) 420 kg Permitted gross weight 600 kg Length 1650 mm / 64.96 in Width 1000 mm / 39.37 in Height 1270 mm / 50 in Driving speed, forward, max. 7 - 8 km/h Driving speed, reverse, max.
KMR 1250 B, LPG, D Technical specifications Engine, KMR 1250 B / LPG (P/N 6.491-573) Designation HONDA GX 270 Type 4-Stroke No. of cylinders Displacement 270 cm Drive belt engine, clearance with 20 N 3 - 8 mm / 0.12-0.32 in Operating speed 2.600 - 2.700 RPM...
KMR 1250 B, LPG, D Special Tools Ignition spark tester (for gasoline and LP gas engine) Remove spark plug connector from spark plug and push onto spark tester. Connect clamp to suitable conductor (e.g., engine cooling fins). If ignition is in good working condition, cranking engine with starter will produce visible sparks between points of spark tester.
KMR 1250 B, LPG, D Special Tools Multimeter Multimeter must meet the following minimum re- quirements: – AC / DC measuring (amps, volts) – Diode test function – Resistance measuring (0-15 kΩ) P/N 6.803-022 Multimeter w/ test probes Magnetic field tester For testing magnetic fields on solenoid valves.
KMR 1250 B, LPG, D Special Tools CO tester Measures CO component in exhaust emissions. – Measuring range > 2% CO content – Resolution: 0.01% – Includes suction pump – LCD display CO Tester for LPG engine Dual-function hand pump For checking integrity of diaphragm in LP gas regulators (LP gas engines).