Download Print this page

Makita EB7650TH Technical Information

Petrol blower

Advertisement

Quick Links

T
ECHNICAL INFORMATION
Model No.
Description
C
ONCEPT AND MAIN APPLICATIONS
Models EB7650TH/ EB7650THG/ EB7650WH are Petrol blowers equipped with
75.6cm³ 4-stroke engine in compliance with strict exhaust emission regulations.
These products are ideal for professional use with the following features:
• Higher air speed and larger air volume than our current model BBX7600
for excellent operation efficiency
• 4 damper springs mounted between the engine and the backpack frame
that reduce vibration on the back of operator even during long hours
of operation to reduce operator stress and fatigue
• Cushioning back padding and shoulder straps well-ventilated for effective
sweat evaporation to provide more comfort
Model EB7650TH features tube-mounted throttle while EB7650WH features
hip-mounted throttle. Model EB7650THG is E25 compatible.
S
pecification
Specification
Type
Displacement: cm³ (cu.in)
Engine
Fuel
Max output: kW (PS)
Max torque: N.m
Speed: minˉ¹ = rpm
Engine oil
Carburetor
Starting
Easy start (Spring-assisted recoil starter)
system
Decompression valve
Spark plug
Primer pump
Fuel tank capacity: L (US oz)
Throttle location
Long pipe 90
Max air
speed:
m/s*3
Short pipe 90
Long pipe 90
Max air
volume:
m³/min*3
Short pipe 90
Dry weight: kg (lbs)
*1 "Straight" means "not mixed with engine oil". *2 EB7650THG: E25 *3 Actual measured value
S
tandard equipment
Oil bottle set*4
Flexible pipe
Box wrench 16
Swivel pipe
Driver
Hose clamp
*4 With engine oil contained for some countries.
Note: The standard equipment may vary by country or model variation.
O
ptional accessories
Short pipe 90
Hip belt set
EB7650TH/ EB7650THG/ EB7650WH
Petrol Blower
Model
at max output power
at no load
End nozzle 90-60
End nozzle 90-70
End nozzle 90-60
End nozzle 90-70
End nozzle 90-60
End nozzle 90-70
End nozzle 90-60
End nozzle 90-70
End nozzle 90-60
End nozzle 90-70
Flat nozzle 90
Length (L)
Width 1 (W1)
Width 2 (W2)
Height (H)
EB7650TH/ EB7650THG
4-stroke, single-cylinder, air-cooled
(Makita EH075F1)
75.6 (4.6)
Straight unleaded gasoline*1 (E0 to E10*2)
2.7 (3.7) [at 7,000 minˉ¹]
4.4 [at 5,000 minˉ¹]
7,100
2,800
SAE10W-30,
Class SF or higher of API Classification
(4-stroke engine oil for automobile)
Diaphragm
No
Yes
NGK CMR6A
Yes
1.9 (64)
Tube-mounted
89 (200)
81 (181)
90 (201)
81 (182)
17 (607)
19 (682)
17 (611)
19 (682)
10.8 (23.8)
Long pipe 90
OFFICIAL USE
for ASC & Sales Shop
PRODUCT
P 1 /35
July 2015
EB7650TH/
EB7650THG
EB7650WH
Dimensions: mm (")
332 (13-1/8)
460 (18-1/8)
510 (20)
480 (18-7/8)
EB7650WH
Hip-mounted
11.0 (24.3)

Advertisement

loading

Summary of Contents for Makita EB7650TH

  • Page 1 EB7650TH/ ONCEPT AND MAIN APPLICATIONS EB7650THG Models EB7650TH/ EB7650THG/ EB7650WH are Petrol blowers equipped with 75.6cm³ 4-stroke engine in compliance with strict exhaust emission regulations. These products are ideal for professional use with the following features: • Higher air speed and larger air volume than our current model BBX7600 for excellent operation efficiency •...
  • Page 2: Necessary Repairing Tools

    Removing/inserting tubes 1R364 Flywheel puller Removing Flywheel 1R366 Feeler gauge set Adjusting gaps of Spark plug, Rocker arm, and Ignition coil 1R389 Cotter removal attachment Attaching/removing Cotter (used together with 1R005) 1R402-A Digital tester Diagnosis of Ignition coil Makita Corporation...
  • Page 3 ・Apply a small amount of 4-stroke engine oil to each part indicated by in the following diagrams when assembling the parts. ・Apply Makita grease N No.2 to the sealing lips of Oil seals and outer circumference of O rings 17 and 20 of the anti-icing valve portion indicated by ・Apply Makita grease N No.2 to the outer circumference of the O ring of Elbow.
  • Page 4 (1) Remove Band completes L and R and Hip belt. Remove each of the fixing parts as shown in Fig. 1 Fig. 1 Pull out the band as shown above. Position the buckle vertically Turn the center of Lock rivet with and then remove it. a Phillips screwdriver to loosen it a little and then remove it. Makita Corporation...
  • Page 5 1. Pull Throttle lever remove (e) from (g). position and remove and then hold it in the wire end. place with a finger. (7) Remove the engine, Volute case and Fuel tank together and then replace Frame (c). Makita Corporation...
  • Page 6 (9) Loosen eleven 5x20 Tapping screws and then remove Rear volute case (i). Remove Elbow (j) together with it. (Fig. 7) Fig. 6 Fig. 7 Lower Upper (10) Loosen the four M6x25 Hex socket head bolts and then remove fan (k). (Fig. 8) Fig. 8 Makita Corporation...
  • Page 7 Place the bullet terminals in place as shown in Fig. 5 (d) while taking care that it will not become pinched in the engine cover. Place corrugated tube (c) of Model EB7650TH in place as shown in Fig. 10. Fig. 10 Place the bullet terminals and line filter in this space, if used.
  • Page 8 (6) Secure Band completes L and R with the fixing parts by reversing the disassembly procedure shown in Fig. 1 while taking care not to mix them up. Twist the bands; Band complete R by 90 degrees clockwise and Band complete L by 90 degrees counterclockwise viewed from the top, and then attach them. (Fig. 12) Fig. 12 Right Left Twist 90 degrees Makita Corporation...
  • Page 9 Tube 3-370 Spiral tube 6-100 Fuel tank (transparent blue) Fig. 14 Inside of Fuel Tank Slide (f) all the way to cover the tubes. Tube 3-370 (black) Hose clamp Tube 3-370 (transparent blue) Filter Makita Corporation...
  • Page 10 P 10/ 35 [3]-3. Throttle Lever Section EB7650TH Disassembly (1) Remove M5x30 thumb screw (a). (Fig. 15) (2) Loosen five 4x18 Tapping screws and then remove Lever case R (b). (Fig. 15) (3) Remove the head of Control cable (c) from Throttle lever A (d) and then remove the lever. (Fig. 15) (4) Remove Throttle link (e), disconnect the connector of Switch unit, and then replace Switch unit.
  • Page 11 (5) Disassemble Arm base (e) and Arm base holder (f) by removing one of two E-4 Stop rings (g) and then pushing out Rod 6 (h) from there. (Fig. 19) Fig. 19 Two rubber sleeves 6 Two torsion springs 21 Makita Corporation...
  • Page 12 (4) Pass Control cable (e), Lead unit (a), and Corrugated tube through at the position indicated in the right photo of Fig. 18. (5) Insert Arm rubbers (f) (they are identical, and the orientation does not matter), and then attach Arm cover (c) Makita Corporation...
  • Page 13 Cam lifter L (h) and Cam lifter R (i). (Fig. 24) Fig. 24 Fig. 23 (6) Pull out pin 5 used as Camgear shaft [part No.256200-2] (j) and remove Camgear (k), and then check that the gear teeth and counterweight portion are not damaged. Makita Corporation...
  • Page 14 1R311 (10) Loosen two M5x30 Hex socket head bolts (o) and remove Rocker cover complete (p). Loosen five M6x35 Socket head bolts (r) of Cylinder head complete (q). (Fig. 27) Fig. 27 (r) 5 pcs. Remove (p) first. Makita Corporation...
  • Page 15 Cylinder head prohibited. Replace Cylinder complete head complete entirely. (13) Remove Intake valve (x) and Exhaust valve (y) to replace or clean them. (Fig. 30) Fig. 30 Exhaust port spacer (w) 2 pcs. (v) 4 pcs. Two Retainers Makita Corporation...
  • Page 16 ・Please note that the engine speed will not increase if even one of the gear teeth is not aligned. ・Install the gasket so that the convex surface is facing the engine side. (Fig. 33) Fig. 33 ・Install so that the convex surface is facing the engine side. Cross section of gasket Makita Corporation...
  • Page 17: Air Cleaner Case

    (4) Use an awl or similar tool to pull out Check valve (c). (Fig. 37) Take care not to damage it. (5) When installing Separator plate (a), tilt it first and then insert it as shown in Fig. 38. Fig. 37 Fig. 35 Fig. 36 Fig. 38 Makita Corporation...
  • Page 18 (O) Pump diaphragm (P) Pump body assembly (Q) Metering diaphragm gasket (R) Screw (4 pcs.) (4) Check the membrane around the metal part of Metering diaphragm (H) and replace the diaphragm if there is any deformation or hardening. Makita Corporation...
  • Page 19 Place the black one For connecting tubes to Fuel tank, beneath the transparent one. refer to assembly procedure 7 of "[3]-2. Do not use the left side. Blower Section (Band Completes L and R, Frame and Fan)" (page 12). Makita Corporation...
  • Page 20 1.0mm or less. The tubes should not push against (b). (5) Connect the tubes with Hose joint (d) oriented as shown in Fig. 44. Fig. 44 45 ゚±10 ゚ Orientation of (d) viewed from the direction of the yellow arrow Makita Corporation...
  • Page 21: Ignition System

    The polarity of the tester does not matter. (Fig. 48) 12 kΩ ±10% Between the earth terminal and Plug cap spring (solid line side) 1.0 Ω Between the earth terminal and the tab terminal for Stop switch (dashed line side) Makita Corporation...
  • Page 22 (2) Bend the lead wires of Stop switch and earth terminal (b) towards the right and then secure them together to Ignition coil. (Fig. 49) Fig. 49 Fix in this space. Make sure they will not rise up. Corrugated tube Makita Corporation...
  • Page 23 (4) Loosen two M5x25 Hex socket head bolts and one M5x14 Hex socket head bolt (total of three bolts) and remove Insulator complete (d). (Fig. 52) For removing tubes, refer to "[3]-6. Carburetor" (page 18). Fig. 52 (5) Remove Pulley, Rocker cover complete, and Cylinder head complete. Makita Corporation...
  • Page 24 (10) Piston (i) can be disassembled first by inserting a small slotted screwdriver or similar tool in from the notch (j) shown in Fig. 55, then by removing one of Ring springs 12 (k), and then pushing out Piston pin (l) from the other side. Fig. 55 Makita Corporation...
  • Page 25 ・The gaps of Top ring (b) and Second ring (c) must be at 180 degrees to each other. ・The gaps of the three parts of Oil ring must be at 120 degrees to one another. Fig. 57 with a barrel face profile with a taper face profile Makita Corporation...
  • Page 26 (7) If Lead valve (g) inside Oil case has been removed, attach it so that the notch (h) is facing the oil filler opening. (Fig. 59) (8) Bend Oil tube (i) to the lead valve side. (Fig. 60) Fig. 59 Fig. 60 (9) Attach Front volute case to the engine block and secure with the six M6x25 Hex socket head bolts. (Fig. 50) Makita Corporation...
  • Page 27 (13) Insert Control cable corrugated tube and the bullet terminal in the storage space of Front volute case. For the specification with a line filter, also insert Line filter and any slack wire in the storage space. (Fig. 10) (14) For the tubes for connecting Fuel tank and Carburetor, attach each protector in reference to Fig. 42. Makita Corporation...
  • Page 28 (4) Check that the rotor contacts the stopper at both idling and full throttle and that the rotation speeds specified in the previous check point are achieved after assembly. (5) Does Stop switch stop the engine properly? (6) Does a warm engine start within three pulls of Recoil starter? (7) Is there no Fuel or oil leak? Makita Corporation...
  • Page 29: Circuit Diagram

    P 29/ 35 ircuit diagram Fig. D-1 <EB7650TH> Switch unit Ignition coil Lead unit Black Black Black Black Black White Earth terminal Black Lead unit <EB7650WH> Switch unit Ignition coil Lead unit Black Black Black Black Black Black 黒 Earth terminal...
  • Page 30: Wiring Diagram

    P 30/ 35 iring diagram <EB7650TH> Fig. D-2 Fix Control cable and Lead unit in the groove of Front volute case. Corrugated tube Lead unit Earth terminal Control cable Hook the earth terminal of Lead unit Earth terminal in the groove of M5-10 Hex nut.
  • Page 31 Place Connectors and the slack of lead wires of lead unit in this space. Fix the lead wires of Lead unit in this Lead wire holder. Place the slack of the lead wires of Lead unit in this space. Makita Corporation...
  • Page 32 (For countries and areas where noise suppression is not required by regulation) Lead unit Earth terminal Corrugated tube Control cable Hook the earth terminal of Lead unit Earth terminal in the groove of M5-10 Hex nut. M5-10 Hex nut Makita Corporation...
  • Page 33 Place Line filter and the bullet terminals in this space. Allow the lead wire of Lead unit to have some slack when routing it here. Hook the earth terminal of Lead unit Earth terminal in the groove of M5-10 Hex nut. M5-10 Hex nut Makita Corporation...
  • Page 34 Lead unit in this space. Place Connectors between Fix the lead wires of Switch unit Fix the lead wires of Rib B and Rib C. (Stop switch) in this lead wire holder. Lead unit (Stop switch) in these lead wire holders. Makita Corporation...
  • Page 35: Tightening Torque Specifications

    9.0 – 11.0 M8 Pulley (15mm across flats) Oil cap (+ Gasket)/ Crankcase 0.4 – 0.7 Oil cap Choke plate/ Choke lever 0.9 – 1.1 4x14 Tapping screw Air cleaner case/ Anti-icing valve cover 0.9 – 1.1 4x14 Tapping screw Makita Corporation...

This manual is also suitable for:

Eb7650thgEb7650wh